Laboratory report Aluminum Copper Alloy MSCI 300 – Thermodynamics of Materials Alexandre de Freitas Silveira Eau Claire December 18th‚ 2012. Abstract: At this experiment‚ the composition of an alloy of Aluminum Copper was analyzed via X-Ray Fluorescence. From this‚ it was possible to construct a phase diagram a make some predictions about the possible phases presents at considering the 3 samples used in this experiment‚ the samples prepared at this experiment the sample as delivered
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Identification of a Copper Compound by Percent Mass Unknown Compound: #9 Abstract: The objective of this experiment was to identify the unknown pure copper salt compound of #9. To do this‚ the mass of copper in the unknown was calculated and then divided by the mass of the whole compound to get the percent copper. The molecular weight was also calculated by dividing mass of copper compound used by moles of compound in unknown sample. The percent copper averaged out to 31.6% while the molecular
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to stop minting the penny and to never use it again‚ but others want to keep using the penny and not get rid of it. Some people are fighting to get rid of the penny and these articles may pull people to their side: “Penny Wise‚ or 2.4 Cents Foolish?”(Source 1)‚ “Is the Penny Worth It?”(Source 2)‚ “Give a Penny-Save the Day!”(Source 3)‚ and “The Ever-Changing Penny”(Source 4). Some think the U.S. penny should be discontinued because it takes more than one penny to make a penny‚ it’s not worth much
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Experiment 1: Synthesis of Copper Compounds Introduction This experiment involves the synthesis of compounds originating from pure solid copper. By applying solubility rules and the reactive properties of substances‚ many compounds which would otherwise be costly to extract from nature are able to be synthesized in the laboratory. Laboratory synthesized may sometimes be more economical than natural extraction‚ however it poses its own problems with the amount of substance that is actually yielded
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factors. Many believe that it is hard work that bring them success‚ others think that luck is more important. I totally agree with the quotation‚ because I believe that success comes from hard work‚ as Newton said “Genius is one percent inspiration and ninety nine percent perspiration”. People often believe that luck is something that is beyond our control. How can we know when we get a big contract? How can we predict when our experiment give way for a new discovery? I disagree with this kind
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Pennies gets dirty at times whenever people take them out of their pockets to pay for something. Pennies are exposed to air and lose their shine really quickly. They collect dust‚ dirt and gunk. Most people‚ without paying attention‚ drops their pennies on the floor and become rusty over time. The reason for this is the air and other things that come into contact with this penny. A cleaning solution can be described in chemical formula of Acetic acid‚ a colorless organic compound‚ which has a pH
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Based on the class data‚ the density of the penny changed dramatically between 1980 and 1985. From 1975 to 1980‚ the penny became 1.40g/mL less dense and from 1980 to 1985‚ the density dropped by 0.626. With this data and the percent composition equation we were able to determine that the second metal in the penny is Zinc with a density of 7.14g/mL. Using scholarly online sources‚ I was able to confirm this data concerning the second metal to be correct. The United States Mint’s website states that
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| JC Penney was once a fashion icon to children‚ young adults‚ and teens. Beginning in 1913 it currently operates over 1000 stores. Growing up my sister and I waited to go through their catalogue. We would circle everything we wanted. We would even get our hair cut the same way some of their models did. I went as far as crimping my hair because the model had her hair crimped. Every summer before school started my Grandma would take us shopping at Penney’s for new school clothes. This company
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“ A penny for your thoughts” is a saying that isn’t commonly used in my generation‚ but the saying might go away because the government is thinking about taking the penny away. Many people believe the penny is worthless and should be removed‚ and they are right. The penny today rarely gets used and costs more to create the penny then its value. Have you ever looked into a wishing well? Well if you have you would have noticed that people only really throw pennies into the well. Many people only
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: The copper cycle IN TRODUCTION The purpose of the experiment is to recognize that change of state‚ change in colour‚ formation of a precipitate‚ or the evolution of heat are associated with a chemical change; to study reactions of copper. Copper is an element that can be found in nature in a variety of different compounds. The most common natural ore is the sulphide‚ known as chalcocite‚ Cu2S. This mineral is an important source of copper metal because it is about 80% copper by weight
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