experiment‚ synthesis of copper compounds‚ the purpose was to recover the original amount of copper after series of chemical reactions. Then returning the copper back to its original form. The copper wire originally weighted 1.0099 g‚ but after the copper was transformed into Cu(OH)2 to CuO to CuSO4 and finally into Cu‚ the mass of the recovered copper was 1.1023g; the percent yield was 109%. Since the percent yield is more than 100%‚ an error must have occurred somewhere in the lab. A possible error could
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may affected the mass of the copper was recovered and also the percentage of yield. According to the law of conservation of matter‚ the mass of the copper will not change even though there are many chemical reactions happened which also mean that the mass of copper contained in solutions or precipitates remain the same as the copper in the beginning. And it is necessary to synthesize the various copper compounds in order to recover metal because the amount of copper might be left due to some errors
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Experiment 3 A Cycle of Copper Reactions Chemistry Department UCC 1st Year Practicals Introduction n n n n n Copper is one of the most important metals. Copper is reddish with a bright metallic lustre It is malleable‚ ductile‚ and a good conductor of heat and electricity (second only to silver in electrical conductivity) Its alloys‚ brass and bronze‚ are very important Has various oxidation states: 0 in elemental copper‚ +1‚ and +2 which is observable in corroded
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Copper Sulfate Pentahydrate Purpose: To verify the formula for copper (II) sulfate pentahydrate by measuring the amount of water decomposed from the hydrated species. MSDS: Copper sulfate pentahydrate- Harmful if swallowed. Causes skin irritation‚ causes serious eye irritation. Very toxic to aquatic life with long effects. If copper sulfate stays in the stomach‚ the victim becomes unconscious. The symptoms of poisoning include diarrhea‚ headache and injury to vital organs. Background: 1
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Copper-Iron Stoichiometry Lab Report 10/3/12 Abstract: The lab performed required the use of quantitative and analytical analysis along with limiting reagent analysis. The reaction of Copper (II) Sulfate‚ CuSO4‚ mass of 7.0015g with 2.0095g Fe or iron powder produced a solid precipitate of copper while the solution remained the blue color. Through this the appropriate reaction had to be determined out of the two possibilities. Through the use of a vacuum filtration system the mass of Cu was
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Objective: The objective of this lab is to determine and analyze the many chemical qualities of copper ‚ by using many solutions that enable copper to undergo chemical changes that will take copper from a metal back to its original state. This is done using cooper‚ Concentrated HNO3‚ 6 M NaOH ‚ Bunsen burner‚ 6 M H2SO4‚ Mg ribbon‚ and two test tubes. The techniques used in this lab which is cleaning glassware‚ disposing of chemicals ‚ measuring mass ‚ centrifugation ‚ venting gases‚ and test tube
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In order to find the formula of the copper chloride hydrate‚ we had to separate the compound to find the mass of water and copper. To begin this process‚ we evaporated the water and created an anhydrous compound‚ meaning we were left with only CuxCly. By calculating the weight of both the anhydrous and the hydrated compounds‚ we could conclude that the difference in the weights was the weight of the H2O. From this we were able to calculate the percent composition of CuxCly and H2O (see Calculations:
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Brayton Cycle (Gas Turbine) for Propulsion Application Analysis Engineering Software P.O. Box 1180‚ Germantown‚ MD 20875 Phone: (301) 540-3605 FAX: (301) 540-3605 E-Mail: info@engineering-4e.com Web Site: http://www.engineering-4e.com Brayton Cycle (Gas Turbine) for Propulsion Application Analysis by Engineering Software Course Category: Engineers Course Level: Intermediate Credit: 1 Hour -- i -- Brayton Cycle (Gas Turbine) for Propulsion Application Analysis Course Description The ideal cycle
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he Krebs Cycle also expressed as: CH3C(=O)C(=O)O− (pyruvate) + HSCoA + NAD+ → CH3C(=O)SCoA (acetyl-CoA) + NADH + CO2 is the main pathway in all aerobic organisms. Basically it’s the way that cells produce energy for itself‚ but the only issue is it requires the presence of oxygen. In total eight reactions that take place in the mitochondria‚ and these reactions result in two carbon molecules and oxidizes it into carbon dioxide. Step 1 Citrate synthase bridges to Oxaloacetate substrates which can
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Spectrophotometric Determination of Copper in Brass Your Name Here Partners: his/her name here Chemistry 1290-xxx Date Report is Due TA: TA’s name here Purpose: The primary purpose of this experiment was …… Another purpose of this experiment was …… Learning about this type of analysis was important in an everyday context because ... Safety Information: During this lab nitric acid will be used as an oxidizing agent and (NO2) nitrogen dioxide will form. This gas is extremely toxic‚ and should
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