SPECTROPHOTOMETRIC ANALYSIS OF A PENNY Date Run: 04/03/2012 Date Submitted: 04/15/2012 Grade: _____________________ Objectives: The purpose of this experiment is to use spectrophotometry to determine the percentage of copper in a copper-clad penny‚ and to determine the thickness of copper layer on the copper-clad penny. Introduction: In the spectrophotometric analysis of a penny lab‚ we will be conducting three experiments. The purpose of the first experiment is to find the maximum absorbance
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Ahmed Fun Filled Hands On Science 17 January 2013 Demonstrations in Chemistry Class Chemistry is a class that a lot of college student are afraid of‚ and when I think of chemistry‚ complex equations that don’t benefit come to my mind. The reason is that all I got out of chemistry is those unbeneficial equations‚ for me at least. Also‚ I learned that H2O is water. With all those negative statements‚ I still believe that chemistry is a very important subject to understand the magic of this life and
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Nail and toenail fungus can be a very hard condition to clear up. This is a condition that many people suffer with day by day and some find it quite embarrassing. Many of the people that suffer with nail funguses find it hard to be able to show off their hands or feet and avoid wearing shoes that show their toes. Although this can be a very tough fungus to get completely rid of and many people go through courses of constant prescription antibiotics only to find that the symptoms return in a matter
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rid of the penny because they’re worthless. Removing the penny won’t hurt charities‚ American History will not be forgotten and making pennies is a waste of time. You can’t use pennies for a lot of things nowadays. The whole point of having the penny is to spend it‚ however‚ the penny itself can’t be spent. Pennies cost more then what they are worth. Yearly it costs the government 134 million dollars to produce 80 million dollars worth of pennies. The U.S had a half penny and when we
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2014 Atkins A Penny for Thought The great debate of the penny is an intriguing and quite controversial one. While some may feel the penny is worthless and not needed‚ others argue passionately that the penny is worthy of great praise and deserves to be kept around. It is not only a great American tradition with great sentiment but it is also functional and extremely convenient. Along with unequivocal opinions‚ statistics are also available to prove how practical and favorable pennies really are.
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the production of pennies‚ because the pennies have become useless in this economy today‚ makers of pennies could be doing more useful jobs‚ and the bill would simply decrease the use of the penny. The time has come to abolish the outdated‚ almost worthless‚ bothersome and wasteful penny. We always have those couple pesky pennies that’s we have to deal with day by day because we can’t get rid of them. Now a day you can’t buy anything with a penny or even a handful of pennies like you use to be
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An experiment to find the percentage of three separated components Research Question: Is it possible to separate salt‚ sand and iron filings from each other in a mixture‚ to figure out the percentage of each component in the original mixture? Background Research: In this Investigation‚ I will be separating sand‚ salt‚ iron fillings in a mixture and finding their percentages. Iron is a magnetic solid which is incapable of being dissolved in water. Salt is a non-magnetic solid which is capable
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the casein protein found in milk. One method of creating this plastic is by adding an acid such as vinegar to the milk‚ and separating the filtrate (the plastic created) from the liquid. This experiment will test if the pH level of an acid effects the amount of plastic produced. This research is important because the world is always needing a more efficient way of producing things. This experiment will help to determine if there is a more efficient way of plastic from milk‚ to suppress the ever-growing
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in Vinegar Abstract: To lesarn how to titrate chemicals in a lab. Also to be able to determine the concentration of an acetic acid solution. Purpose: To learn how to titrate‚ and calulate the concentration of an acetiuc acid solution. In this case the concentration of vinegar‚ which is diluted acetic acid. Hypothesis: The sodium hydroxide used in this titration would balance out the acetic acid in vinegar. The phenolpthalein‚ a acid –base color indicator will let us know the vinegar have
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DESIGN BUILD PROJECT SCOPE PROJECT INTRODUCTION Background Penny Store is a franchise of convenience stores which will be opening their new store in Kitchener‚ Ontario. Penny Store will be the first 24-hour convenience store that is more like an big dispensing machine than the traditional store. The store is to be built in space of 3200 sq. feet. The store expects to capture market
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