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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molecular formula of Copper Oxide through synthesis of copper oxide. In the first procedure‚ an empty crucible‚ Bunsen Burner‚ and electronic scale were placed onto the workbench. The electronic scale was zeroed before the crucible was placed on it. The total mass of the empty crucible was 88.000g. Afterwards‚ 10 grams of copper powder was placed into the crucible and weighed to be 98.000 g. The crucible with the copper was placed onto the Bunsen Burner. The initial color of the copper was red. The Bunsen
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How JC Penny and Kohl’s Use Facebook in their Marketing Plan Introduction In today’s society we are dependent on social media for information. Social media gives us a feeling of being connected‚ even when we don’t even know the person we are reading about. The information passed through Facebook‚ LinkedIn‚ YouTube‚ MySpace comes to us uncensored and can evolve rather quickly. Many companies use tools like Facebook‚ to reach their customers. People are on Facebook twenty
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Article Rebuttal Talisha Clinkscale Bcom/275 Kevin McCoyd May 8‚ 2013 Planned Parenthood opened in 1933 for women who struggling financially and who did not have access to birthcontol. P.P is a non-profit organization that assisted women with their reproductive health. On Peter Baklinski released and bias article about P.P. This writer slandered the name of the organization and was one of the reasons the company lost over 61 million in taxed based funding. In this writing I will be analyzing
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DETERMINATION OF COPPER BY COMPLEXATION‚ SOLVENT-EXTRACTION AND SPECTROPHOTOMETRY ABSTRACT To determine the concentration of copper in an unknown solution by using copper complexation‚ solvent extraction and spectrophotometry. Standards are used to create a calibration curve and the unknown concentration of copper is then calculated by using the linear equation from the calibration curve. The concentration of copper in the unknown solution 201 was found to be 12.57± 0.25 μg/mL. INTRODUCTION Copper is an
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How Important is the Penny? The one-cent coin‚ commonly known as the penny‚ was made legal by the Coinage Act of 1864. On the penny that we carry in our pockets‚ is the face of the 16th President of the United States‚ Abraham Lincoln. Throughout the years‚ the penny has helped shape our culture‚ by giving us sayings and idioms‚ such as ¨a penny for your thoughts¨ and ¨not one red cent”. Over the years‚ the penny has seen many things‚ yet now a conflict has arisen: Should the United States keep producing
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using the A‚ B symbols‚ write a general equation for a single-displacement reaction. Here are the chemical formulas of the reactants for each reaction: • zinc – Zn copper sulfate – CuSO4 • aluminum – Al copper sulfate – CuSO4 • zinc – Zn silver nitrate – Ag(NO3) • copper – Cu silver nitrate – Ag(NO3) Answer: (8 points) |Score | | | 2. For Part 3: Double-Displacement Reactions: For each of the double-displacement
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Copper Chloride Lab Report Procedure Part A: 1. Pick up the container of copper chloride dehydrate‚ and observe material. Describe crystals in detail‚ and write down all of the observations. Part B: 1. Take a 100 ml beaker and fill ¼ of it with water. Use a spatula to add some copper chloride dehydrate to the beaker filled with water. Record the observations. Be sure to observe the water and the copper chloride dehydrate. 2. Stir the contents in the beaker with
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Pennies are easily spent and worth one cent‚ so if I was you I wouldn’t let that precious penny walk out of my life. Pennies are very expensive to produce. We have spent over eighty million dollars over the production of pennies‚ while pennies are only worth one cent. Even though some people want to get rid of the penny‚ it would be better if we keep it because it is apart of or culture. Also‚ we could avoid price increases from rounding up‚ and pennies are good for charities. Many people have
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Percent Copper in Brass Background The scientific concepts involved in this lab include Spectroscopy‚ Beer’s law‚ Calibration curve‚ concentration‚ and electronic transitions. The main objective of this experiment is to see how the percent composition of brass can be determined to verify the properties influenced by copper and zinc. Brass is a generic term for alloys of copper and zinc. The main technique used in this experiment is Spectroscopy. The three equations used in this lab are: Y = mx
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