The Beginners Guide to How a Battery Works

The Pregnancy Of A Foetus Diagnosed With Down Syndrome

Discuss the challenges facing parents today in deciding to terminate or continue with the pregnancy of a foetus diagnosed with Down Syndrome. Introduction Having a child comes with not only positive experiences, but also pressure and other adjustment matters. If you are told that your unborn child is diagnosed with Down Syndrome, your perspectives and concerns may change significantly. Known as a genetic disorder that is estimated to occur in 1 out of every 650- 1000 live births (Bittles Glasson, 2004), receiving a positive diagnosis of Down Syndrome can be very overwhelming for the parents. Prenatal diagnosis and screening are controversial when we refer to ethical considerations, but the benefits that they provide are undeniable. Prenatal tests do not only facilitate choices through information provision, but also allow the parents to recognise and prepare for the challenges that their unborn child and their family have to face upon their decision making. Whether it is the trauma and grief of abortion or the pressure and difficulty of raising a child with disability, the challenges that they have to face will have a significant impa ct on their life and it may create new shifts and change their family dynamics forever. Aspects and arguments Down Syndrome (DS) or trisomy 21 is a condition where â€Å"the third copy of chromosome 21 disturbs the expression of all DNA in the genome† (Study revises cause of down syndrome, 2014, p.1). This genetic condition is responsible forShow MoreRelatedDown Syndrome : A Congenital Chromosomal Disorder1371 Words   |  6 PagesDown syndrome is a congenital chromosomal disorder during maternal meiosis. This is one of the most common chromosomal disease that has been confirmed (Epstein, 2013). Down syndrome causes some symptoms in children’s physical and mental aspects, which have significant differences with other people. It may cause the life of the child is abnormal and cannot live independently in the future. With the increased population of children with Down syndrome in Australia, it becomes prominent that they stronglyRead MoreInvestigating effectiveness of treatments1600 Words   |  7 Pageshave to buy 2 of everything?!’. However, multiple foetuses can cause problems most parents haven’t even considered. One of these is twin-to-twin transfusion syndrome. Twin to twin transfusion syndrome or TTTS, occurs in monochoriomic monozygotic pregnancies and the syndrome affects 1 in 2000 or approximately 10-15%. TTTS occurs when one foetus (the recipient) becomes significantly larger than the other (donor). This is due to unequal distribution of the placenta shared. TTTS is a largely misunderstoodRead MoreGenetically Inherited Diseases2257 Words   |  9 Pagesthere is the mutual exchange of genes in the pieces of chromosomes that causes variation in offspring, however this is where mutations commonly occur. If a parent has either a faulty gene or a missing gene, the child is usually at high risk of being diagnosed with the disorder or may be a carrier. Definition of a genetically inherited disease: â€Å"A genetic disease or disorder is the result of changes, or mutations, in an individual’s DNA. A mutation is a change in the DNA sequence that make up a gene†Read MoreHow Did You Feel After Learning That Your Son Was Affected By Spina Bifida?3796 Words   |  16 Pagesyou believe he has exceeded that? â€Å"Oh yes, definitely. Obviously I understood that the doctors knew what they were talking about but deep down I think that I already knew my baby would be alright, and all this time later he’s getting on amazingly†¦Spina bifida does impact his life but he doesn’t let it define him†¦I would say he has a great quality of life, yes. He loves watching football andRead MoreThe Potential Effects Of Five Different Life Factors On The Development Of An Individual1716 Words   |  7 Pageslooking at Down’s syndrome, diabetes and cystic fibrosis. Down’s syndrome Down’s syndrome is a genetic condition that typically causes some level of learning disability. People with Down’s syndrome may have a variety of birth defects. About half all affected children are born with a heart defect. Digestive abnormalities are less common. Individuals with Down’s syndrome have an increased risk of developing several medical conditions. About 15 percent of people with Down’s syndrome have an underactiveRead MoreEvaluation Of The Organization s Service Delivery Essay1363 Words   |  6 Pagesimprovement initiative programme to people. Firstly, the Antenatal HIV Screening (NSU, 2014). 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Health Promotion Health promotion promotes theRead MoreProject on Ultrasound12323 Words   |  50 Pagesto kill a large number of bacteria. 3. Ultrasonic waves are used in detection gall bladder stones, kidney liver abscess, tumor in liver kidney etc. 4. Ultrasonic technology is widely used in obstetrics gynecology for detection of twin pregnancy; malformations the fetus etc. 2.1 REVIEW OF ULTRASOUND The story of the development of ultrasound applications in the medicine should probably start with the history of measuring distance under water using sound waves. As far high frequencyRead MoreProject on Ultrasound12332 Words   |  50 Pageskill a large number of bacteria. 3. Ultrasonic waves are used in detection gall bladder stones, kidney liver abscess, tumor in liver kidney etc. 4. Ultrasonic technology is widely used in obstetrics gynecology for detection of twin pregnancy; malformations the fetus etc. 2.1 REVIEW OF ULTRASOUND The story of the development of ultrasound applications in the medicine should probably start with the history of measuring distance under water using sound waves. As far high frequencyRead MoreUnit 14 Childcare Grade B6300 Words   |  26 Pageschildren whose needs may not require a â€Å"statement† or to contribute to the process of â€Å"statementing†. | Children with special needs should be educated alongside their peers. The views of parents should be recognised. Children’s ‘handicap’ should be ‘diagnosed’ | Children Act 1989 | Care standards Act 2000 | Code of practice 1994 | Disability discrimination Act 1995 | Code of practice 2001 | Children with disabilities should be educated in mainstream schools wherever possible. Health, education and

Csr on Chevron and Kellogg’s Free Essays

Introduction In business world companies are interested in how to maintain or increase shareholder values and profit. So, in order to give something back to the general public, those companies have to assume their responsibilities by being aware of the effects of their activities in the community and take measures to control them because this can affect the community and the environment by polluting the air, destroying the ecosystem, over using natural resources and so on. CSR is often called corporate citizen which means that companies should be good neighbors of the community not to work against it but collaborate with the citizen or the society in order to increase their welfare, to make a community a better place to live. We will write a custom essay sample on Csr on Chevron and Kellogg’s or any similar topic only for you Order Now (catalyst consortium, july 2002) What Corporate Social Responsibility is all about? In the other hand companies have to limit the excess damage on the environment, and help people in the economic development this is a way of behaving ethically in a business, cooperate with loyal spirit, ethical values, global measures and develop a general positive impact of the business on the society. hen a company choose to be socially responsible they better be prepared to go through some difficulties and critics about the way they operate, and the goals they want to achieve and must not forget the main purpose of the business which is making profit, Development: Chevron’s background: * CHEVRON is an American second oil company which has been founded in 1879 by an American group of explorers since then chevron has changed its name more than once but it took its name â€Å"chevron† in 1984 and it has worked with many other oil companies like Texaco and many more, the company now hav e 58,000employees and 4,000 service station employees. chevron, 2011) * KELLOGG’S is a company which produce product comes from cereals the company has started in 1906 by W. K KELLOGG’S in USA, it started with 44employeees but now it has become one of the big company in the world which sell its products in about 180 countries around the world (kellogg’s, 2011) So now we are going to see how these companies operate in social responsibility in environment and community its work in As chevron company which produce oil, it has a huge responsibility to defend its activities for it to keep a good impression from the society so this is how it operate in CSR: Environment| chevron| Kellogg’s| | * protect environment in Indonesia include animals in a park by providing it energy and support guards * Promote agriculture and help farmers in that same region * Water treatment : like clean a pond into fresh water so that people can use the former pond in agriculture * Create committee called ESHIA (environment, social and health impact assessment), in charge of studying a project prior to execution to ensure if is not a threat or a danger to the environment so that the ESHIA can see how to avoid it or reduce the negative consequences it have on the environment(chevron, 2011)| * its aim is to decrease the quantity of GHG they send into the atmosphere * new system of environment protection called K-CAPP (cares about people and planet) in supervising every Kellogg’s factory in context of avoid danger * prevent lack of water: reduce water consummation of their product where they replace the former method of cleaning their crops with dr y technique to the wet system of cleaning * packaging recycle : the statistics shows that 93% of Kellogg’s waste is recycled and the 7% is used in nursing animals and producing energy (kellogg’s, 2010)| CHEVRON and KELLOGG’S are both involved in the conservation of the environment and try to limit the damages caused by their activities on the ecosystem and guaranty the safety of the people who are using their products, it comes to wonder if what companies tell us is real . For example the consequences of CHEVRON’s operations in Ecuador’s Amazon where they have intentionally threw 18. 5 billion gallons of toxic waste have caused cancer, birth defects, death and damages to the surrounding of the city dwellers. And what’s more the recent case of oil spillage which caused serious problem to the environment in Brazil. (Rain forest action network, 2010). Another example of a company which their report is not the same as their activities on the field is the British oil company called BP. Indeed they say that they are doing the CSR based on what their former president said â€Å" we want to operate in a friendly environment in order of renewable and lasting energy with a genuine concern for the environment â€Å" but this is different of what happened these past years , as a matter of fact in 2010 the release of oil in the gulf of Mexico damaged almost everything near the coast , people lost their jobs, some of the species who were living there died, and still now there is a problem of cleaning the water in the gulf because it has been pollute. So based on this example we can ask ourselves if there is a real CSR in BP and CHEVRON’s operations when they cannot control the dangerousness of their activities and be more careful about their effects on people and the environment. ommunity| Chevron | Kellogg’s| | * promote small enterprises where it invest about 25$million * create new jobs and train employees, like in Luanda (Angola) about 143 new jobs were created in 2010 * In education , 2000 students got entrepreneur courses and provide trainings to teachers but in partnership with UNESCO and UNICEF * chevron and bank of Angola collaborate to facilitate people to get loan for their business development * with the partnership of a project called PROAGRO they assist farmers to increase their productivity * provide vaccination in Angola and Congo to eradicate a disease called polio chevron and its partners invested about 29million $ in medical training in 20 past years (chevron, 2011)| * provide breakfast to school’s children around the world so that program cost about $400,000 no profit * donate cashes and kellogg’s product to assist people in Japan , Haiti, Australia caused by the disaster, when in 2010 * in 2011 it donate $500,000 to the American cross to give their hand in Japan during the disaster ,and also it intervene in Chile after 1month in Mexico * 165 children received scholarship for them to continue their stu dies * Encourage children to practice sport when it sponsors schools in Sweden . (kellogg’s, 2010)| KELLOGG’S show us their involvement in community welfare but we still find some customers complaining about the ingredients of their products , which is increasing obesity among people in USA (Robinson, 2010) and there are other companies such as NIKE , where employees work in a bad condition , children working in their factories ,over time work and all of that they just earn a miserable salary which doesn’t match on the efforts they put into the manufacturing of the product which the company will sell at high price. But they defend themselves by saying that there are not implied in this situation because they design the product and retailers produce them so they pretend there are not involved in the manufacturing process therefore, not linked to the situation they are accused for ,even if they are indirectly implied they have to control every single thing which is done under their name and which could affect their reputation, so this is a lesson to other companies that social responsibility starts within the organization with their employees before it spread out to the community , because those employees are one of the most reliable advertising tool of the company . So they have interest to treat them well for them to insure the confidence of customers and employees (stephen p. , 2003) CSR is not only community which benefit from it but also companies ,when there are doing CSR this is a kind of advertising or save their reputation , and attract more confidence from their customers Conclusion: we can’t blame all companies which are not doing CSR or to do it wrong, because it’s not always about managers of the company who don’t want to do it but there are shareholders who don’t want to spend their money in CSR all they want is to insure the maximization of their profit and there are those which avoid criticize or being treated as hypocrisy and always be compared to others, try to please the community by doing CSR, (KARNANI, 2010) but also increase their profit and social responsibility and still reducing dangers of their operations ,because there are those companies which think that doing CSR is about spending money which will give them more expenditures by participating in for example charitable activities . (two tomorrows, jun 2009) and manager don’t know how to differentiate till now , a social responsibility and social responsiveness , which is make a practical decisions about the societal actions in which it operate for it s to satisfied some expressed social needs because is guided by social norms , because manager focus just on things which increase profits, and this is most of the time because of some shareholders who don’t want to spend their money in CSR , yes, is all businessman want but they can just try to do good hings to the society not just economic but also socially, by starting with their employees they work with by facilitate them and give them some opportunities. So if all all companies , instead of using a lot of money in advertising , to use it in charities this can be a good advertisement by doing good also to the society and the environment they work in ,and for those which do it already, they need to improve their way of doing CSR not only to advertise and restore the reputation, This is not only about doing things ethically or to fill their CSR report but also conduct the business in a responsible manner not because there are required to do it but because it’s their duty. (baker, jun 2004) . o do like KELLOGG’S, CHEVRON, BP , NIKE and many others are doing, because they owe it to the society and the environment ,for example by improving working condition of their employees ,expanding employees rights and increasing job security, building schools to develop education ,in case of health also distribute medicines and construction of hospitals, and offer opportunities their employees and let people who are in same area take advantage of their presence by offering them jobs or constructing infrastructures,†¦ (businessdictionary. com, 2011) People don’t just need words or CSR report on their website , they just want to see proof of what companies are capable to do for the society not only economically but also socially because developing a place while it’s environmentally dying doesn’t mean any sense ,so companies have to see how to improve their CSR in those sector. How to cite Csr on Chevron and Kellogg’s, Essay examples

Nitration of acetanilide free essay sample

The experimental procedure was conducted as per instructions from the chemistry 220 manual. We were told to add 5grams of Acetanilide but due to time constraints I had added 5. 05grams. Whilst preparing the mixture of Nitric acid and sulphuric acid, I misjudged the reading on the measuring cylinder once again due to time constraints and consideration toward my fellow peers. As indicated, we were instructed to add the mixture drop wise; I had allowed the tap to run due to a confusion of the tap mechanism. The mixture therefore went up to 20 degrees and dropped gradually back to 11 degrees . After adding a little over 45mL of methanol, in order to start the process of recrystallization, my product was still cloudy. I feel I therefore may have added too much to re-dissolve the product. It took time for my product to break down over the steam and dissolve, yet eventually, suggested by the demonstrator I left it to become fully crystalized once again therefore becoming a ice cold slurry. We will write a custom essay sample on Nitration of acetanilide or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Thereafter filtration took place. Reaction Mechanism: Reference:www. kshitj-school. com en. wikipedia. org Melting point of substance prepared: Para-nitroacetanilide= 214-217 degrees Celsius(http://content. hccfl. edu/faculty/bertrubini/2211%20-%20Electrophilic%20Aromatic%20Substitution. pdf) Melting point of substance prepared: Expected yield: Calculation of yield Limiting agent –acetanilide Moles for limiting agent=5. 05g/135. 16g/mol=0. 0374mol Moles of product=1/1*0. 0374=0. 0374mol Mass product expected=0. 0374*180. 16g/1mol=6. 74g Short discussion: Critical point in this experiment is, due to aromatic nitration of Acetanilide being an exothermic reaction, the temperature must constantly be monitored and there must be slow additions of all reagents. Also every acid must be removed due to hydrogen ions, catalysing the hydrolysis of the amide to p-nitroaliline. Nitronium ion is formed by mixing the concentrated sulphuric acid and nitric acid. An improvement that could be made to the experiment is that the steam baths should have been singular units so we could monitor our substances more thoroughly.

Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Example

Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Before carrying out a set of experiments, I decided to do preliminary work to look at quantities and measurements, in order for my experiments to work smoothly and accurately. To do this, I tested both amounts of marble chips and amounts and concentration ranges of acid. I also experimented with different measuring cylinder sizes. I carried out a few simple experiments varying the above, and came up with the most sensible.We began by what seemed the most practical quantities. Firstly we looked at marble chips. We took 5g as a starting example. To accompany this we looked at what would be a sensible amount of liquid to accompany it and chose 50ml. To find the right measuring cylinder to use, we set up a mock experiment and began with a 25ml measuring cylinder. We timed experiments for both the strongest and weakest concentrations of acid and recorded the following results.50ml acid0ml water = 26.80 seconds10ml acid40ml water = 2 minutes, 53.77 secondsThese were both practical results and so we were happy with the size of the measuring cylinder. Along with this, we also took note at how our quantities of acid and marble chips worked together and saw that they were both satisfactory. All other equipment and the set up of the apparatus were also fine and so we decided to move on to the proper experiments.Planning My WorkFor this experiment I will need to investigate how the rate of reaction of marble chips is effected by acid as well as considering other factors that my have an effect.Aim: To find a relationship between the concentration of acid and the rate of which a reaction takes place with marble chips.To begin the experiment, I need to look at the chemistry of marble chips (calcium carbonate) and acid and so I will begin with their equations.Word equation:calcium carbonate + hydrochloric acid calcium chloride + water + carbon dioxideChemical equation:CaCo3(s) + 2HCl(aq) CaCl2(aq) + H2O(l) + CO2(g)When the reaction takes place, carbon dioxide, water and salt will be produced. Out of these three, I have chosen carbon dioxide as the one to measure for my rate of reaction. This is because it will be the easiest and most noticeable to collect. By the measurement of the carbon dioxide, we will be able to accurately follow how fast the reaction occurs. Pg 190 of the Chemistry for you book, shows a sensible, simple and accurate way of measuring a gas like carbon dioxide, in an upturned measuring cylinder filled with water. If we place marble chips and acid in a conical flask, the gas will bubble through a delivery tube lowering the level of water, which we will then be able to time until all water has left the cylinder.The amount of time it takes for the gas to fill the measuring cylinder will show us how much carbon dioxide has been given off and so will show us the rate of reaction. Rate of reaction is altered by three main things. One is SURFACE AREA. This will relate to the surface area of our marble chips. The finer the chips, the larger the surface area, and so the larger the rate of reaction. However, we are intending to keep the surface area the same. Another factor is TEMPERATURE. Again, we are not going to alter the temperature. If we were to, the hotter the temperature, the faster the rate of reaction as the molecules would have more energy. The other is CONCENTRATION. This relates to the concentration of the acid and is what we will use as our variable.The acid particles can only react with the marble chips when they collide, as seen in the diagrams.The acid particles move randomly through the water. As you increase the concentration of the acid, there are more acid particles in the same volume. Therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble and you increase the rate of reaction.This is what I will use in my experiment. The concentration of acid is written in Molars. For example, 1M (molar) is half the concentration of 2M. I will alt er the concentration to see what effect it has on the rate of reaction.Predictions:I predict that when investigation the effect of concentration on rate of reaction between marble chips and acid, that an alteration in concentration will effect the rate of reaction in a pattern. As has already been explained, as you increase the concentration of the acid, there are more acid particles in the same volume and so therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble. Because of this, I will make the prediction that the higher the concentration of acid, the faster the rate of reaction with the marble chips and the faster my measuring cylinder will fill with carbon dioxide.I also predict a more detailed pattern. I predict that the level of concentration may also have a direct effect on the rate of reaction. E.g. that if a 2M was compared with a 1M acid which is half the concentration, the rate of reaction will also be ha lf. I will now need to carry out my experiment to test these predictions.My ExperimentDiagram:Apparatus:Conical flask to hold the marble chips and acid for the experiment50ml measuring cylinder to measure the volume of acid being used in the experiment. I chose 50ml volume because that is the maximum acid we will need.Delivery tube and bung will transport C02 given offWeighing pot to hold the marble chips for weighing25ml measuring cylinder to collect the C02 given off by the experiment. I chose 25ml because it was the most sensible sizeBalance reading to 0.01g, must be accurate, to weigh the marble chipsWater trough to hold the water for the collection of C02Stop clock reading to 0.01 of a second, to accurately time the collection of C02 and the rate of the reactionMethod:Each time the variable is altered, I shall carry out exactly the same experiment, merely with a different concentration.* I will begin by collecting and setting up all my equipment. I need to make sure tha t the chonical flask is clean and doesnt have any substances already in it. The 25ml measuring cylinder needs to be filled with water. We found that if we filled a 25ml measuring cylinder, due to excess volume above the measurements, it actually held a total of 40ml. We found this by completely filling the cylinder as we would in the experiment, and then pouring this into a larger measuring cylinder and taking the reading. The cylinder then needs to be stood upside down in the trough that also needs to have an ample amount of water in. The delivery tube needs to be under the cylinder but does not yet need to have the bung in the flask.* The marble chips then need to be weighed accurately, remembering to take into account the surface area. These can then be put into the flask.* I will then prepare my acid to the right concentration. The amount of acid needs to be measured accurately in the separate, 50ml measuring cylinder and then water needs to be added, if required, to dilute the acid to the right concentration.* The acid can then be added to the flask and marble chips. The bung needs to be put in the flask immediately, and as soon as this is done I will begin the stop clock.* I will then watch the flask carefully and as soon as the first bubble comes out of the measuring cylinder, will stop the stop clock and take my reading.This will be carried out for each experiment. In-between, it is important to rinse and dry the chonical flask and to refill the 25ml measuring cylinder.After obtaining a complete set of results, I will then go through the process again to repeat my experiments. This will give me added information and will help explain anything out of place if necessary.Concentrations and Readings:I am going to carryout five experiments, and then repeat these to give me a total of 10 results, two for each experiment. The experiments I will carry out will be of five different concentrations of acid. Along with the concentrations in ml of both acid and wat er, I have written along with it the concentrations in molar (M). (Our original strength of acid is 2M) The concentrations will be:Acid (ml)Water (ml)CalculationMolar (M)5002 x 5/5 = M240102 x 4/5 = M1.630202 x 3/5 = M1.220102 x 2/5 = M0.810402 x 1/5 = M0.4We see that in this experiment, 2M will be the strongest acid, 0.4 will be the weakest. The way that the amount of ml is always equal to 50ml means though the concentrations change, the volume of liquid will be kept the same.Fair Test:It is very important to make my experiment fair. If it is not kept exact, then my results may easily be altered by slight differences that shouldnt occur.In order to keep my experiment fair, I will ensure that there is only one variable at any time. My variable will be the concentration of acid to water. Other possible variables such as the amount of liquid, temperature, amount of marble chips or surface area of marble chips should never change and should always stay the same. To do this, we will kee p the volume of liquid the same by measuring accurately in an accurate measuring cylinder. The amount of marble chips will be kept same by weighing them on accurate weighing scales. The surface area of the chips will be harder to keep accurate. We can do this generally by attempting to keep the marble chips of similar sizes as accurately as possible. I have decided to use small marble chips rather than large so that the surface areas are more similar. However, this may not always be completely accurate, and so we will have to take this into account and remember this when looking at results. We will monitor temperature with a thermometer, but will work to room temperature. We will not be able to alter the temperature as we please, and so will take a note of the temperatures for each experiment so that we can explain any changes of patterns in our results.It is also important not to change apparatus or equipment and to keep the experiment exactly the same.If this is kept to then my ex periment will be fair, hopefully giving me the most accurate results as possible.Safe Test:Keeping a safe test is also very important for the safety of me and other people around me. To ensure that my experiment is safe, I will carry out the following precautions.* Goggles should be warn to protect my eyes from acid or in case another accident occurred* I should act in a sensible and safe manner, carefully working with the equipment and being aware of any dangers.* The low concentration of acid I will use is a safety precaution to ensure that the acid is not dangerous.Obtaining My EvidenceTo obtain my evidence, I began by setting up my equipment and following the plan previously written. I measured hydrochloric acid (HCl) with water to produce the 50ml volume of the desired concentration, and added to this, 5g of small marble chips. I timed, in seconds, how long this took to produce a 45ml3 of gas by bubbling it through a delivery tube into an upturned mea-suring cylinder of water. The volume of which was 45ml. (All this is explained in more detailed in my plan). I included certain apparatus for accuracy. The reaction was timed accurately by using a stop clock measuring to 100th of a second. The scales measured the marble accurately by measuring exact to 0.01g. This accuracy of this was also improved by using small marble chips with more similar surface areas. The measuring cylinders used all measured to 0.1ml.From carrying out this process, I produced a set of results for 5 concentrations of acid, 2M, 1.6M, 1.2M, 0.8M and 0.4M. I then repeated these results for even more accuracy so that I will be able to produce an average.Results:The results for both the first set of experiments and the repeated, second set of experiments have been combined into one table. The column of Concentration, is measured in Molars (M). This is the volume of hydrochloric acid (HCl) and water (both measured in cm3) shown together. Time 1 and Time 2 are the times (in seconds) for expe riment 1, and the repeats, experiment 2.Other information that I also took, was a note of the room temperature at the time of taking the results. The results of experiment 1 and experiment two were taken on different days and so this was important information. I already know that temperature is an altering factor in rate of reaction and so if the temperature if not the same then it is important to know so that a change in results can be explained.Experiment 1 temperature 200CExperiment 2 temperature 190CThe first lots of experiments were taken at a temperature 10C higher than the second lot of experiments. This needs to be known to explain any patterns that may be related.Table of My Results:HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)500213.0113.0740101.617.2713.3030201.227.3022.5120300.844.3732.4910400.4215.12186.22Analysing My Evidence and Drawing ConclusionsFrom my table of results, I can calculate additional information. I can work out an average ti me by adding the two existing times and dividing them by two. I can then find a rate of each reaction by dividing 1 by the average time. This will give me another pattern to follow by showing me how fast the reaction went at the different concentrations. The formulas for these are:Average = time + time / 2Reaction = 1 / timeI am going to add the answers of these as additional columns onto my table.HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)Average Time (seconds)Rate500213.0113.0713.040.76740101.617.2713.3015.290.06530201.227.3022.5125.310.0420300.844.3732.4938.430.02610400.4215.12186.22200.670.005From the table, without the average time, we can see a common difference between the time in experiment one and the time in experiment two. All results for experiment 1 are slightly quicker than the times for experiment two (with exception of the 2M experiment). We can relate this back to the temperature difference. Temperature affects the rate of reaction. Whe n particles are heated up, they have more energy. They move around more quickly. As they travel faster, there are more collisions in a certain time. As well as this, with more energy, more collisions are likely to result in a reaction. Therefore, as temperatures are raised, reactions get faster and more likely, increasing the rate of reaction.I noted when obtaining my results how the room temperature at the time experiment 1 was being carried out was 200C, where as experiment 2 was at 190C. This means that experiment 1, having the higher temperature, would have shown a faster rate of reaction, which is exactly what is shown in the table.This is apart from the reading for the highest concentration, the 2M experiment. Here we see that the time in experiment 2 is faster than that in experiemnt1. However, this is by 0.06 of a second. Here human reaction time may be a factor. Although the stop clocks are very accurate, they will never be exact, as it is very hard to stop the clock exactl y at the time you want it to. This error may have led to this small difference. By noticing this here, we can also take it into account for the other experiments, remembering that they are not exact but only by a very small error.The average helps to even out the differing results which means that one, middle number is produced to work with. Because, also, I have no obvious anomalous results, readings that dont fit the pattern of the higher the concentration, the faster the reaction and so the shorter the time, the averages will follow the same trend.To look more closely at my data, I am going to enter my average times onto a line graph. I think this is the best type of graph to use as it fits my results of continuous date and will show any trends clearly. This is on the next page (graph 1). The concentration in molars is along the x-axis, the time of the reaction in seconds is along the y-axis. I have plotted my recorded points and drawn a curved line of best fit.From this data I c an now say that the concentration does effect the rate of reaction. The line of best fit shows very clearly, a definite trend that as you increase the concentration, you decrease the time taken, showing an increase in speed. Rate and time are inversely related. As one increases the other decreases, as seen on the graph, meaning that as time increases, rate of reaction decreases.What we see on the graph is a sharp decrease from about 200 seconds to about 50 seconds over a concentration range of only 0.3M showing fast reactions. Over another 11M there is a much more gradual decrease as it slows down, only covering approximately a range of 49 seconds. The remaining range of 2M covers 1 second and appears to be reaching a level line.The second graph (graph 2 over the page), again a line graph, is using the rate I worked out in the table, against the concentration. This gives us I more direct trend towards the effect of concentration on rate of reaction. It shows very definitely and clea rly that the higher the concentration, the higher the rate. As rate and time are inverse, I would expect an almost mirror of the concentration against time graph. This is what has happened. Instead of a sharp decrease followed by a gradual decrease as seen in the concentration against time graph, the concentration against rate graph shows a gradual increase followed by a sharp increase. My line of best fit covers 1.4M at a 0.05 rate very gradually, then a slight increase, and then over 1M, the rate increases by 0.567.My prediction before carrying out this experiment was that the higher the concentration of acid, the faster the rate of reaction. Both these graphs prove this to be correct. This is due to the activity of the molecules in the experiment. The rate of reaction is the amount of a substance that takes part in a chemical reaction in a given time. In order to react, the particles must collide with each other. If the rate of reaction is increasing, it is the amount of particle s colliding and therefore reacting that is increasing. As we increase the concentration of acid, the substance taking part in the chemical reaction (along with marble chips), the rate of reaction increases. This is because an increase in concentration increases the amount of collisions taking place. With more particles in the same volume, there is a greater and more common likely hood of collisions taking place. This is why concentration effects rate of reaction.The second part of my prediction was more detailed. I predicted that the level of concentration may also have a direct effect on the rate of reaction, meaning that if the reaction of a 2M acid was compared with that of a 1M acid, which is half the concentration, the rate of reaction will also be half.I looked at my graph of concentration against rate to investigate this. I used the examples of 1M and 2M and took the following readings of my graph and line of best fit.1M = rate of 0.032M = rate of 0.72This shows my prediction to be very incorrect. If it would be true, then my graph would show a straight line of equal increase. However, my line of best fit gradually increases, going against my prediction.From my results I can conclude that the rate of reaction between marble chips and acid is increased by an increase in concentration.EvaluationLooking back on the experiment, I think that I have carried out successful, dependable procedure that has given me precise and reliable evidence and results. First I will look at the practical work that I did. When doing the practical work, I followed my plan accurately. I kept it a safe and fair test and this is important. I experiment I planned was easy to carry out. Problems arose in temperature. The only variable was meant to be concentration, but due to uncontrollable circumstances, room temperature did alter. Luckily this occurred between sets of experiments which gave me additional information to look into. However, if that had happen part way through a set of results my results may have been slightly more irregular. To overcome this problem, results could have been taken all in one go. However, this was not practical in the spaces of time we were able to have. The other variable of surface area appeared to de successful. We already took precautions over this by using small marble chips instead of large, and so no problems arose.The accuracy of my results is as accurate as I think I would need. From my results I have produced graphs that show very definite and visible trends and patterns and no anomalous results and so the readings must have been correct. It may be possible to improve accuracy. I learnt from the strongest concentration, the 2M acid and the fastest reaction, that for short spaces of time the accuracy is not as exact. This could be solved by an alteration in equipment. If I were to do the experiment again, I would use a larger upturned measuring cylinder. The one I used held 45ml3 of solution. I found this took roughly 1 3 seconds to fill with gas, making it slightly inaccurate because it was a small space of time. However, if we increase the volume of the cylinder, it would take a longer time period. This may have improved accuracy. Other equipment all proved fine. I had no troubles with any other pieces of apparatus and would not alter them.To look into this investigation further of how concentration alters rate of reaction, I would like to look into concentration of solids in a reaction and concentrations of gases, similar to how we look at concentration of liquid and acid. It will be interesting to see if gases for instance have the same reaction patterns as liquids. I can see that my results mean that an increase of concentration of acid increases the rate. Would an increase of concentration of gas make any difference in the rate of reaction? This would help to add to an overall conclusion to the investigation. Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Example Investigation into the Effect of Concentration on Rate of Reaction between Marble Chips and Acid Essay Before carrying out a set of experiments, I decided to do preliminary work to look at quantities and measurements, in order for my experiments to work smoothly and accurately. To do this, I tested both amounts of marble chips and amounts and concentration ranges of acid. I also experimented with different measuring cylinder sizes. I carried out a few simple experiments varying the above, and came up with the most sensible.We began by what seemed the most practical quantities. Firstly we looked at marble chips. We took 5g as a starting example. To accompany this we looked at what would be a sensible amount of liquid to accompany it and chose 50ml. To find the right measuring cylinder to use, we set up a mock experiment and began with a 25ml measuring cylinder. We timed experiments for both the strongest and weakest concentrations of acid and recorded the following results.50ml acid0ml water = 26.80 seconds10ml acid40ml water = 2 minutes, 53.77 secondsThese were both practical results and so we were happy with the size of the measuring cylinder. Along with this, we also took note at how our quantities of acid and marble chips worked together and saw that they were both satisfactory. All other equipment and the set up of the apparatus were also fine and so we decided to move on to the proper experiments.Planning My WorkFor this experiment I will need to investigate how the rate of reaction of marble chips is effected by acid as well as considering other factors that my have an effect.Aim: To find a relationship between the concentration of acid and the rate of which a reaction takes place with marble chips.To begin the experiment, I need to look at the chemistry of marble chips (calcium carbonate) and acid and so I will begin with their equations.Word equation:calcium carbonate + hydrochloric acid calcium chloride + water + carbon dioxideChemical equation:CaCo3(s) + 2HCl(aq) CaCl2(aq) + H2O(l) + CO2(g)When the reaction takes place, carbon dioxide, water and salt will be produced. Out of these three, I have chosen carbon dioxide as the one to measure for my rate of reaction. This is because it will be the easiest and most noticeable to collect. By the measurement of the carbon dioxide, we will be able to accurately follow how fast the reaction occurs. Pg 190 of the Chemistry for you book, shows a sensible, simple and accurate way of measuring a gas like carbon dioxide, in an upturned measuring cylinder filled with water. If we place marble chips and acid in a conical flask, the gas will bubble through a delivery tube lowering the level of water, which we will then be able to time until all water has left the cylinder.The amount of time it takes for the gas to fill the measuring cylinder will show us how much carbon dioxide has been given off and so will show us the rate of reaction. Rate of reaction is altered by three main things. One is SURFACE AREA. This will relate to the surface area of our marble chips. The finer the chips, the larger the surface area, and so the larger the rate of reaction. However, we are intending to keep the surface area the same. Another factor is TEMPERATURE. Again, we are not going to alter the temperature. If we were to, the hotter the temperature, the faster the rate of reaction as the molecules would have more energy. The other is CONCENTRATION. This relates to the concentration of the acid and is what we will use as our variable.The acid particles can only react with the marble chips when they collide, as seen in the diagrams.The acid particles move randomly through the water. As you increase the concentration of the acid, there are more acid particles in the same volume. Therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble and you increase the rate of reaction.This is what I will use in my experiment. The concentration of acid is written in Molars. For example, 1M (molar) is half the concentration of 2M. I will alt er the concentration to see what effect it has on the rate of reaction.Predictions:I predict that when investigation the effect of concentration on rate of reaction between marble chips and acid, that an alteration in concentration will effect the rate of reaction in a pattern. As has already been explained, as you increase the concentration of the acid, there are more acid particles in the same volume and so therefore there is a greater chance of acid particles colliding, and reacting, with particles on the surface of the marble. Because of this, I will make the prediction that the higher the concentration of acid, the faster the rate of reaction with the marble chips and the faster my measuring cylinder will fill with carbon dioxide.I also predict a more detailed pattern. I predict that the level of concentration may also have a direct effect on the rate of reaction. E.g. that if a 2M was compared with a 1M acid which is half the concentration, the rate of reaction will also be ha lf. I will now need to carry out my experiment to test these predictions.My ExperimentDiagram:Apparatus:Conical flask to hold the marble chips and acid for the experiment50ml measuring cylinder to measure the volume of acid being used in the experiment. I chose 50ml volume because that is the maximum acid we will need.Delivery tube and bung will transport C02 given offWeighing pot to hold the marble chips for weighing25ml measuring cylinder to collect the C02 given off by the experiment. I chose 25ml because it was the most sensible sizeBalance reading to 0.01g, must be accurate, to weigh the marble chipsWater trough to hold the water for the collection of C02Stop clock reading to 0.01 of a second, to accurately time the collection of C02 and the rate of the reactionMethod:Each time the variable is altered, I shall carry out exactly the same experiment, merely with a different concentration.* I will begin by collecting and setting up all my equipment. I need to make sure tha t the chonical flask is clean and doesnt have any substances already in it. The 25ml measuring cylinder needs to be filled with water. We found that if we filled a 25ml measuring cylinder, due to excess volume above the measurements, it actually held a total of 40ml. We found this by completely filling the cylinder as we would in the experiment, and then pouring this into a larger measuring cylinder and taking the reading. The cylinder then needs to be stood upside down in the trough that also needs to have an ample amount of water in. The delivery tube needs to be under the cylinder but does not yet need to have the bung in the flask.* The marble chips then need to be weighed accurately, remembering to take into account the surface area. These can then be put into the flask.* I will then prepare my acid to the right concentration. The amount of acid needs to be measured accurately in the separate, 50ml measuring cylinder and then water needs to be added, if required, to dilute the acid to the right concentration.* The acid can then be added to the flask and marble chips. The bung needs to be put in the flask immediately, and as soon as this is done I will begin the stop clock.* I will then watch the flask carefully and as soon as the first bubble comes out of the measuring cylinder, will stop the stop clock and take my reading.This will be carried out for each experiment. In-between, it is important to rinse and dry the chonical flask and to refill the 25ml measuring cylinder.After obtaining a complete set of results, I will then go through the process again to repeat my experiments. This will give me added information and will help explain anything out of place if necessary.Concentrations and Readings:I am going to carryout five experiments, and then repeat these to give me a total of 10 results, two for each experiment. The experiments I will carry out will be of five different concentrations of acid. Along with the concentrations in ml of both acid and wat er, I have written along with it the concentrations in molar (M). (Our original strength of acid is 2M) The concentrations will be:Acid (ml)Water (ml)CalculationMolar (M)5002 x 5/5 = M240102 x 4/5 = M1.630202 x 3/5 = M1.220102 x 2/5 = M0.810402 x 1/5 = M0.4We see that in this experiment, 2M will be the strongest acid, 0.4 will be the weakest. The way that the amount of ml is always equal to 50ml means though the concentrations change, the volume of liquid will be kept the same.Fair Test:It is very important to make my experiment fair. If it is not kept exact, then my results may easily be altered by slight differences that shouldnt occur.In order to keep my experiment fair, I will ensure that there is only one variable at any time. My variable will be the concentration of acid to water. Other possible variables such as the amount of liquid, temperature, amount of marble chips or surface area of marble chips should never change and should always stay the same. To do this, we will kee p the volume of liquid the same by measuring accurately in an accurate measuring cylinder. The amount of marble chips will be kept same by weighing them on accurate weighing scales. The surface area of the chips will be harder to keep accurate. We can do this generally by attempting to keep the marble chips of similar sizes as accurately as possible. I have decided to use small marble chips rather than large so that the surface areas are more similar. However, this may not always be completely accurate, and so we will have to take this into account and remember this when looking at results. We will monitor temperature with a thermometer, but will work to room temperature. We will not be able to alter the temperature as we please, and so will take a note of the temperatures for each experiment so that we can explain any changes of patterns in our results.It is also important not to change apparatus or equipment and to keep the experiment exactly the same.If this is kept to then my ex periment will be fair, hopefully giving me the most accurate results as possible.Safe Test:Keeping a safe test is also very important for the safety of me and other people around me. To ensure that my experiment is safe, I will carry out the following precautions.* Goggles should be warn to protect my eyes from acid or in case another accident occurred* I should act in a sensible and safe manner, carefully working with the equipment and being aware of any dangers.* The low concentration of acid I will use is a safety precaution to ensure that the acid is not dangerous.Obtaining My EvidenceTo obtain my evidence, I began by setting up my equipment and following the plan previously written. I measured hydrochloric acid (HCl) with water to produce the 50ml volume of the desired concentration, and added to this, 5g of small marble chips. I timed, in seconds, how long this took to produce a 45ml3 of gas by bubbling it through a delivery tube into an upturned mea-suring cylinder of water. The volume of which was 45ml. (All this is explained in more detailed in my plan). I included certain apparatus for accuracy. The reaction was timed accurately by using a stop clock measuring to 100th of a second. The scales measured the marble accurately by measuring exact to 0.01g. This accuracy of this was also improved by using small marble chips with more similar surface areas. The measuring cylinders used all measured to 0.1ml.From carrying out this process, I produced a set of results for 5 concentrations of acid, 2M, 1.6M, 1.2M, 0.8M and 0.4M. I then repeated these results for even more accuracy so that I will be able to produce an average.Results:The results for both the first set of experiments and the repeated, second set of experiments have been combined into one table. The column of Concentration, is measured in Molars (M). This is the volume of hydrochloric acid (HCl) and water (both measured in cm3) shown together. Time 1 and Time 2 are the times (in seconds) for expe riment 1, and the repeats, experiment 2.Other information that I also took, was a note of the room temperature at the time of taking the results. The results of experiment 1 and experiment two were taken on different days and so this was important information. I already know that temperature is an altering factor in rate of reaction and so if the temperature if not the same then it is important to know so that a change in results can be explained.Experiment 1 temperature 200CExperiment 2 temperature 190CThe first lots of experiments were taken at a temperature 10C higher than the second lot of experiments. This needs to be known to explain any patterns that may be related.Table of My Results:HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)500213.0113.0740101.617.2713.3030201.227.3022.5120300.844.3732.4910400.4215.12186.22Analysing My Evidence and Drawing ConclusionsFrom my table of results, I can calculate additional information. I can work out an average ti me by adding the two existing times and dividing them by two. I can then find a rate of each reaction by dividing 1 by the average time. This will give me another pattern to follow by showing me how fast the reaction went at the different concentrations. The formulas for these are:Average = time + time / 2Reaction = 1 / timeI am going to add the answers of these as additional columns onto my table.HCl (cm3)Water (cm3)Concentration (Molar)Time 1 (seconds)Time 2 (seconds)Average Time (seconds)Rate500213.0113.0713.040.76740101.617.2713.3015.290.06530201.227.3022.5125.310.0420300.844.3732.4938.430.02610400.4215.12186.22200.670.005From the table, without the average time, we can see a common difference between the time in experiment one and the time in experiment two. All results for experiment 1 are slightly quicker than the times for experiment two (with exception of the 2M experiment). We can relate this back to the temperature difference. Temperature affects the rate of reaction. Whe n particles are heated up, they have more energy. They move around more quickly. As they travel faster, there are more collisions in a certain time. As well as this, with more energy, more collisions are likely to result in a reaction. Therefore, as temperatures are raised, reactions get faster and more likely, increasing the rate of reaction.I noted when obtaining my results how the room temperature at the time experiment 1 was being carried out was 200C, where as experiment 2 was at 190C. This means that experiment 1, having the higher temperature, would have shown a faster rate of reaction, which is exactly what is shown in the table.This is apart from the reading for the highest concentration, the 2M experiment. Here we see that the time in experiment 2 is faster than that in experiemnt1. However, this is by 0.06 of a second. Here human reaction time may be a factor. Although the stop clocks are very accurate, they will never be exact, as it is very hard to stop the clock exactl y at the time you want it to. This error may have led to this small difference. By noticing this here, we can also take it into account for the other experiments, remembering that they are not exact but only by a very small error.The average helps to even out the differing results which means that one, middle number is produced to work with. Because, also, I have no obvious anomalous results, readings that dont fit the pattern of the higher the concentration, the faster the reaction and so the shorter the time, the averages will follow the same trend.To look more closely at my data, I am going to enter my average times onto a line graph. I think this is the best type of graph to use as it fits my results of continuous date and will show any trends clearly. This is on the next page (graph 1). The concentration in molars is along the x-axis, the time of the reaction in seconds is along the y-axis. I have plotted my recorded points and drawn a curved line of best fit.From this data I c an now say that the concentration does effect the rate of reaction. The line of best fit shows very clearly, a definite trend that as you increase the concentration, you decrease the time taken, showing an increase in speed. Rate and time are inversely related. As one increases the other decreases, as seen on the graph, meaning that as time increases, rate of reaction decreases.What we see on the graph is a sharp decrease from about 200 seconds to about 50 seconds over a concentration range of only 0.3M showing fast reactions. Over another 11M there is a much more gradual decrease as it slows down, only covering approximately a range of 49 seconds. The remaining range of 2M covers 1 second and appears to be reaching a level line.The second graph (graph 2 over the page), again a line graph, is using the rate I worked out in the table, against the concentration. This gives us I more direct trend towards the effect of concentration on rate of reaction. It shows very definitely and clea rly that the higher the concentration, the higher the rate. As rate and time are inverse, I would expect an almost mirror of the concentration against time graph. This is what has happened. Instead of a sharp decrease followed by a gradual decrease as seen in the concentration against time graph, the concentration against rate graph shows a gradual increase followed by a sharp increase. My line of best fit covers 1.4M at a 0.05 rate very gradually, then a slight increase, and then over 1M, the rate increases by 0.567.My prediction before carrying out this experiment was that the higher the concentration of acid, the faster the rate of reaction. Both these graphs prove this to be correct. This is due to the activity of the molecules in the experiment. The rate of reaction is the amount of a substance that takes part in a chemical reaction in a given time. In order to react, the particles must collide with each other. If the rate of reaction is increasing, it is the amount of particle s colliding and therefore reacting that is increasing. As we increase the concentration of acid, the substance taking part in the chemical reaction (along with marble chips), the rate of reaction increases. This is because an increase in concentration increases the amount of collisions taking place. With more particles in the same volume, there is a greater and more common likely hood of collisions taking place. This is why concentration effects rate of reaction.The second part of my prediction was more detailed. I predicted that the level of concentration may also have a direct effect on the rate of reaction, meaning that if the reaction of a 2M acid was compared with that of a 1M acid, which is half the concentration, the rate of reaction will also be half.I looked at my graph of concentration against rate to investigate this. I used the examples of 1M and 2M and took the following readings of my graph and line of best fit.1M = rate of 0.032M = rate of 0.72This shows my prediction to be very incorrect. If it would be true, then my graph would show a straight line of equal increase. However, my line of best fit gradually increases, going against my prediction.From my results I can conclude that the rate of reaction between marble chips and acid is increased by an increase in concentration.EvaluationLooking back on the experiment, I think that I have carried out successful, dependable procedure that has given me precise and reliable evidence and results. First I will look at the practical work that I did. When doing the practical work, I followed my plan accurately. I kept it a safe and fair test and this is important. I experiment I planned was easy to carry out. Problems arose in temperature. The only variable was meant to be concentration, but due to uncontrollable circumstances, room temperature did alter. Luckily this occurred between sets of experiments which gave me additional information to look into. However, if that had happen part way through a set of results my results may have been slightly more irregular. To overcome this problem, results could have been taken all in one go. However, this was not practical in the spaces of time we were able to have. The other variable of surface area appeared to de successful. We already took precautions over this by using small marble chips instead of large, and so no problems arose.The accuracy of my results is as accurate as I think I would need. From my results I have produced graphs that show very definite and visible trends and patterns and no anomalous results and so the readings must have been correct. It may be possible to improve accuracy. I learnt from the strongest concentration, the 2M acid and the fastest reaction, that for short spaces of time the accuracy is not as exact. This could be solved by an alteration in equipment. If I were to do the experiment again, I would use a larger upturned measuring cylinder. The one I used held 45ml3 of solution. I found this took roughly 1 3 seconds to fill with gas, making it slightly inaccurate because it was a small space of time. However, if we increase the volume of the cylinder, it would take a longer time period. This may have improved accuracy. Other equipment all proved fine. I had no troubles with any other pieces of apparatus and would not alter them.To look into this investigation further of how concentration alters rate of reaction, I would like to look into concentration of solids in a reaction and concentrations of gases, similar to how we look at concentration of liquid and acid. It will be interesting to see if gases for instance have the same reaction patterns as liquids. I can see that my results mean that an increase of concentration of acid increases the rate. Would an increase of concentration of gas make any difference in the rate of reaction? This would help to add to an overall conclusion to the investigation.

Hiters ability to gain control over german people essays

Hiter's ability to gain control over german people essays Hitler was able to gain control of the German people by first winning their trust. He took advantage of their vulnerability after the extensive loss caused by the war. Germany was looking for some kind of relief, and Hitler promised to provide it to them. He created a philosophy that was similar to a religion; it left no room for doubt. Hitler knew how to convince people with his public speaking skills which were phenomenal. By creating a widespread belief in his views, Hitler was able to gain support simply by a bandwagon effect. People joined in what they were surrounded by. In the article many Nazy holidays are mentioned. Hitler used festive events to persuade Germany that his beliefs were cause for celebration and would lead to better times. Hitler used his knowledge of people to manipulate them. He spoke in the evenings so people would be tired, their powers of resistance low, and their complete emotional capitulation would be easily achieved. He used anything he could come up with to render the minds of his audience. Germany was happy with Hitler; he gave them pride. He called them mighty, inspiring, energetic, and patriotic. The people looked up to Hitler almost as a religious icon. Many people in the article referred to Hitler as a Messiah-like or religious figure. He made his entrances and speeches overly dramatic as to emphasize his importance and benignity. Over time, Hitler had created a sense of ritual among the people. It was no longer a new and exciting change for the Germans, but a tradition. People conformed to fit the mold Hitler had shaped for them with his manipulative promises. By 1939, as the article states, 90% of Aryan children belonged to a Nazi youth group. Children in Germany were taught to repeat chants such as Heil Hitler and to act and speak like a Nazi should. They grew up helplessly naive; they didnt know anything but what they were being taught. Surround...

Stock option backdating Essay Example | Topics and Well Written Essays - 1500 words

Stock option backdating - Essay Example Backdating can take on several meanings. The most culpable form of backdating involves "intentionally changing the date used to set an option's exercise price to one on which the stock's price was at a low" (Ellsworth et al., 2006). This form of backdating was abetted by the relatively lax legislation before the Sarbanes-Oxley Act was enacted in 2002. The Sarbanese-Oxley Act mandated that stock options be filed within 2 days after they are granted (FindLaw, 2002), mitigating the backdating problem. Before the Sarbanese-Oxley Act came into effect, option grants were reported using Form 5 which primary use is for the disclosure of "the transactions and holdings of directors, officers, and beneficial owners of registered companies" (Securities and Exchange Commission, n.d.). Furthermore, the form is required to be filed only "on or before the 45th day after the end of the issuer's fiscal year" (Securities and Exchange Commission, n.d.). This essentially means that if the stock options w ere granted early in the fiscal year, investors would not come to know of them until almost 1 year later, giving more leeway for insiders to manipulate the date on which the exercise price was established. Most of the 63 companies involved in stock option backdating "relate to a roughly six-year period prior to the Sarbanes-Oxley legislation" (Grant and Nuttall, 2006). ... Such company actions and policies include sloppy documentation, delays in the grant approval process, and the wrong interpretation of APB Opinion No. 25 Accounting for Stock Issued to Employees (Ellsworth et al., 2006). Summary of Statement No. 123 Accounting for Stock Issued to Employees prescribes that the intrinsic value or fair value based method of accounting be used for the valuation of stock options (Financial Accounting Standards Board, 1995). Most companies continue with the intrinsic value based method of accounting (Ellsworth et al., 2006). Under the intrinsic value based method, "compensation cost is the excess, if any, of the quoted market price of the stock at grant date or other measurement date over the amount an employee must pay to acquire the stock" (Financial Accounting Standards Board, 1995). If company actions are efficient, the measurement date would be the same as the grant date, and no compensation cost is recorded. More often than not, due to procedures such as the signing of the resolution by the directors, the measurement date would be at a later date than the grant date. If the price of the underlying stock has risen over the period between the measurement date and the grant date, the stock option is in the money and the difference should be recognized as compensation expense. Backdating occurs when companies, whether intentionally or unintentionally, choose to use the price of the underlying stock on the grant date as the basis for measuring the compensation cost. An example of the above form of backdating of stock options is Michaels Stores Inc., which understated compensation expenses by as much as $60 million between 1990 and 2001 (Bulkeley, 2006; Maremont, 2006). Michaels