this‚ CO(NO3)2 *6H2O Purpose What is the percent transmittance of six different solutions of cobalt (II) nitrate hexahydrate using a spectrophotometer? Materials * Graduated cylinder (10 mL) * Graduated cylinder (25 mL) * pipet * 1 cuvette * Safety goggles * Electronic balance‚ accurate to two decimal places * Test tube rack * 5 test tubes * Volumetric flask (100 mL) * Beaker (100 mL) * Spectrophotometer * Distilled water * Squirt bottle Procedure
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molecules that are in the hydrate. Copper(II) sulfate pentahydrate‚ or CuSO4 * 5H2O‚ is a ratio of one copper sulfate to five (penta) molecules of water. Copper sulfate pentahydrate is a blue hydrate while anhydrous copper sulfate (CuSO4) is white. To get anhydrous copper sulfate‚ copper sulfate pentahydrate must go through an endothermic reaction and have all of its water molecules evaporated. It then becomes the white‚ flaky‚ and chalky material anhydrous copper sulfate. Adding
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Introduction: Copper has played a vital role in past civilizations and continues to do so today due to its many properties as a metal. Although advantageous in today’s economy and also in human bodies‚ high concentrations of copper can prove toxic to our health and even pollutant to the environment. By altering the element through a number of chemical reactions including redox‚ metathesis‚ decomposition‚ and single replacement reactions‚ the cycle will be complete once solid copper is recovered.
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Copper Sun is a novel by Sharon M. Draper about 15 year old Amari‚ whose village was taken over so she has to cope with the fact that her family is now gone. She also has to deal with the fact that she is being taken away from her true love. Throughout the story Amari displays many emotion‚ two major emotions are loneliness and bravery. Amari becomes very lonely when the fact that her parents and brother are dead becomes a reality. She still has Afi‚ who treats her like her own. On the very rough
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Mass % of Sucrose in Chewing Gum Purpose To find the mass percentage of sucrose in chewing gum and compare the actual mass to the mass indicated on the package and compare the masses to that of different brands of chewing gum. Hypothesis The theoretical mass percentage of sucrose (C12H22O11) in chewing gum. Materials - Sample of chewing gum + wrapper - Electronic balance Procedure 1. Form groups of 3‚ and distribute a different brand of gum to each member of the group. 2. Record the brand
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ending. But in all story’s‚ it must come to an end. In Penny in the dust by Ernest Buckler‚ and Lamb to the Slaughter by Roald Dahl ‚ the endings are very different. In Penny in the Dust a boy named Dan‚ his father gives him a penny which was very special to the boy but he loses it‚ then the father looks for it and finds it. The boy explains he was make believing that they got their automobile that they had dreamed for‚ the father kept that penny to remember that memory. In Lamb to the Slaughter a man
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AP Chemistry 12/13/11 Round-Trip Copper Reactions Lab The purpose of this lab was to evaluate our skills of decanting a supernatant liquid without losing the solid and successful completion of a series of reactions. This was done through five chemical reactions involving copper. In this lab‚ elemental copper was put through five different chemical reactions in order to convert it into different compounds. By the end of the fifth reaction‚ the copper was back to its elemental state. In the
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PERCENTAGE TAXES SUMMARY (in ascending order) Rate | Description | 1/2 of 1% (0.005) | * PT /Final tax on shares sold in Local Stock Exchange | 0% | * Dividends/equity shares in Net Income of Subsidiaries | 1% | * IPO on share of stock over 33 1/3% * GR Tax on Banks‚ on interests‚ commissions and discounts with Maturity Period of More than 5 Years | 2% | * IPO on share of stock (25-33 1/3%) * Gas and water franchises | 3% | * PT on Domestic Carriers and Keepers
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one place. Copper State Nut & Bolt can provide you with all of the supplies you need to complete your project. From fasteners and construction products to power tools and accessories‚ your construction needs can be met in one stop shopping. About Copper State Nut & Bolt Copper State Nut & Bolt is a privately held company which has been a leader in providing construction products to contractors‚ retailers and wholesalers in the southwestern U.S. since 1972. With 21 locations‚ Copper State offers
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For the percentage yield is 39.08% which is less than and not 100%‚ by this‚ it can be concluded that the reaction is non-stoichiometric. The low yield can be explained by the following ways: The presence of reversible reaction-for the reaction between ethanol and ethanoic acid‚ it is reversible and which is only considered to be irreversible for simplicity of calculations. For reversible reaction like this‚ the ethanol and ethanoic acid will not be totally converted to ethyl ethanoate but until
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