Preparation of Calcium Carbonate Lab In this laboratory activity you will attempt to produce 1.00g of calcium carbonate from aqueous solutions of calcium chloride and sodium carbonate. These solutions will be prepared from 2.01 g of calcium chloride and 1.06 g of sodium carbonate . Materials: 3 beakers 100 mL graduated cylinder rubber policeman funnel filter paper Procedure: 1. Put on your safety goggles. 2. Obtain two clean beakers. Rinse the inside of the beakers with a small
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extraction. While different reagents were added to the copper wire‚ different reactions were also observed and tallied until the recovered copper was weighed and the percentage yield was calculated from the formula: Percentage Yield=mass of recovered copperactual yieldmass of copper wire (theoretical yield) x 100 The percentage yield of the experiment was 42%. ____________________________________________________________ ________________________ Introduction All chemical reactions occurring within
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Chemistry‚ 2014 UNIT 1 – MATTER TRENDS AND CHEMICAL BONDING History of the atom DEMOCRITUS Smallest particle of matter is called an atom Atoms are in constant motion and have empty space between them ARISTOTLE 4 element theory of matter (earth‚ air‚ water‚ fire) Had different combinations of the 4 qualities: hot‚ cold‚ dry‚ moist JOHN DALTON Expanded on Democritus’s theory: All matter is composed of tiny‚ indivisible particles All atoms of an element have identical properties
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crude product was distilled to yield a pure tert-butyl chloride. The tert-butyl alcohol‚ together with HCl‚ underwent an SN1 nucleophilic substitution reaction‚ which is composed of three steps—(1) propanation of alcoholic oxygen‚ (2) formation of carbocation‚ and (3) attacking of the nucleophile to the carbocation. The experiment was only able to yield 0.504 grams or 5.21% of the theoretical yield of 9.679 grams‚ which is considered as extremely low percent yield. This result could have resulted
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Stoichiometry of a Precipitation Reaction Purpose: The purpose of this lab is to calculate the theoretical‚ actual‚ and percent yield of the product from a precipitation reaction. Also‚ to learn concepts of solubility and the formation of a precipitate. Procedure: Weigh out your 1.0g of CaCl2-2H20 and put it into the 100mL beaker‚ Add your 25mL of distilled water and stir to form the calcium chloride solution. Next‚ use stoichiometry to determine how much Na2CO3 and put it into a small
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2 NaHCO3 reacted with HCl: The mass of the flask was recorded. 2.0 +/- 0.2 grams of NaHCO3 was added to the flask. The mass of NaHCO3 + flask was then recorded. Before moving on to step 3‚ the mass of NaHCO3 was calculated. Then the theoretical yield of NaCl was determined. This was the hypothesis. 30 mL of hydrochloric acid should be obtained. HCl was slowly added to NaHCO3‚ drop by drop. The reactants should not splatter out of the flask. When the liquid had begun to build up‚ the flask was
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BOND PROBLEM SOLUTIONS 1. Six years ago‚ The Corzine Company sold a 20-year bond issue with a 14 percent annual coupon rate and a 9 percent call premium. Today‚ Corzine called the bonds. The bonds originally were sold at their face value of $1‚000. Compute the realized rate of return for investors who purchased the bonds when they were issued and who surrender them today in exchange for the call price. PV = 1000; N = 6; PMT = 140; FV = 1090; CPT I/Y I/Y = 15.02% 2. You just purchased
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The theoretical mass of 301 mg and an experimental mass of 253 mg created an 84.05% yield of product. The crude benzil product had a melting point of 80.3°C-87.5°C with an overall melting range of 7.2°C. According to Merck Millipore‚ pure benzil has a melting point of 93°C-97°C. Therefore‚ the crude product contained impurities as the melting
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discounted at 8 percent annually: $1‚000 at the end of year 1‚ $2‚000 at the end of year 2‚ and $3‚000 at the end of year 3? A) $5‚022.11 B) $5‚144.03 C) $5‚423.87 D) $5‚520.00 Answer A PV = [pic] = $925.93 + $1‚714.68 + $2‚381.50 = $5‚022.11 2. (Q. 6 in B) What is the present value of a four-year annuity of $100 per year that begins two years from today if the discount rate is 9 percent?
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Citigroup Fails Fed’s Stress Test as BofA Gets Dividend Boost By Michael J. Moore and Elizabeth Dexheimer Mar 27‚ 2014 9:45 AM GMT+0545 - Comments Email Print AprJunAugOctDecFeb40.0045.0050.0055.0060.00* Price chart for CITIGROUP INC. Click flags for important stories. C:US50.16-0.14 -0.28% Related Citigroup‚ Four Other Banks Fail Fed Stress Test Citigroup Inc.’s capital plan was among five that failed Federal Reserve stress tests‚ while Bank of America Corp. won approval for its first
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