passed from cancer and had been cremated. Her name was Penny. Penny was the sweetest‚ smartest dog‚ and anyone that met her came to this realization themselves. She was abused by her previous owners and in 2009 she was left in a backyard to die after they moved out. November 10th 2009‚ I got my little angel‚ and ever since then she has slept with me and followed me everywhere‚ even when I only moved five feet. If it weren’t for Penny‚ I wouldn’t be where I am today‚ and I probably wouldn’t
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Formula and Percent Composition of the Compound Magnesium Oxide (MgO) Nice sounding title Date Performed Lab: 8/31/06 Purpose: The purpose of this lab was to confirm the chemical formula of magnesium oxide by comparing the masses of pure magnesium solid prior to any reaction and magnesium oxide solid after a reaction between all of the magnesium and oxygen from the air when heated from a Bunsen burner in a crucible. Using molar masses of both magnesium and oxygen‚ an expected percent composition
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Determining the Limiting Reactant and Percent Yield in a Precipitation Reaction Objectives: Observe the reaction between solutions of sodium carbonate and calcium chloride. Determine which of the reactants is the limiting reactant and which is the excess reactant. Determine the theoretical mass of precipitate that should form. Compare the actual mass with the theoretical mass of precipitate and calculate the percent yield. Materials: Balance 0.70 M sodium carbonate solution‚ Na2CO3(aq)
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ion; it is added in excess to the oxidizing agent being determined. This would result to the formation of iodine which would be titrated with the standard thiosulfate solution. (2) For example in this experiement‚ the analyte that was used was copper in the form of CuSO4•H2O. It was strong enough to oxidize iodide ions to Iodine. The analyte was needed to be isolated‚ and we did this by precipitating it out of the solution. To precipitate out Cu (II) ions‚ NH3 was added dropwise – this is
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Glencore‚ Xstrata and the Restructuring of the Global Copper Mining Industry in 2012 Diana Alvarez Valencia (1310200) University Canada West Dr. Paul Rome MGMT 661 Strategic Management Tuesday‚ May 12‚ 2015 Introduction and Problem Identification In this case study we will identify the problems that can be issued in the process of the merger between two of the largest commodities traders in the world‚ Glencore and Xstrata. It will provide the background of both companies‚ the situation analysis
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Is it a problem if one percent of Americans possess 50% of American wealth and assets? Kelvin Howard PHI 103 Informal Thinking Instructor Stephen Krogh February 25‚ 2013 One percent of Americans possess more cash‚ stocks and property than the assets of 155 million Americans combined. How could it be that 400 people have more wealth than half of the more than 100 million U.S. households? The distribution of wealth pertains to allotment of wealth in a given place and/or time. It measures
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Objectives 2 Theory 2 Apparatus 7 Procedure 8 Results 10 Calculations 14 Discussion 20 Conclusion 21 Recommendations 21 References 22 Appendices 22 Abstract This experiment was performed in order to determine the molarity of a solution and the percent by mass of acetic acid‚ CH3COOH in vinegar. Acetic acid is monoprotic and belongs to the carboxyl family of organic compounds. The titration method is used to neutralize the acids by using the standardized sodium hydroxide solution. It reacts with
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Determining the Limiting Reactant and Percent Yield in a Precipitate Reaction (SMG 6D) AP Chemistry One example of a double replacement (metathesis) reaction is the mixing of two solutions resulting in the formation of a precipitate. In solution chemistry‚ the term precipitate is used to describe a solid that forms when a positive ion (cation) and a negative ion (anion) are strongly attracted to one another. In this experiment‚ a precipitation reaction will be studied. Stoichiometry
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EXPERIMENT 8 QUANTITATIVE DETERMINATION IODOMETRIC TITRATION OF COPPER CONCENTRATION IN AQUEOUS SOLUTION B Y RESULTS AND DISCUSSION Considered as moderately weak oxidizing agent‚ Iodine was used for the determination of strong reductants. Standard iodine solutions were found to have smaller electrode potentials as compared with the other oxidants‚ gaining them the advantage of imparting a degree of selectivity essential in the determination of strong reducing agents amid the presence
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happen when you put zinc in copper II sulfate? • What will happen when you put copper in copper II sulfate? Predictions: • We can predict that zinc will react with the aqueous solution of copper II sulfate and we will notice a reaction. We can also predict that the copper will not react with the solution of copper II sulfate and no reaction will be noticed. Hypothesis: • It is hypothesized the zinc metal will have a precipitation reaction with the solution of copper II sulfate‚ because zinc is more
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