Determination of Water in a Hydrate DESIGN – Aspect 1: Defining the problem & selecting variables Research Question: What percentage of Copper Sulfate Hydrate is water? Background Information: There are many ionic compounds that contain one or more waters of hydration in their formulae. They exists either in anhydrous or hydrated form. Most anhydrous compounds have a strong tendency to absorb water from the humidity in the atmosphere and shifts into a hydrated form. Because of
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content. The silver-copper alloy will be dissolved in nitric acid‚ the silver will be precipitated as silver chloride‚ and the silver chloride will be filtered‚ washed‚ dried and its mass determined. From the mass of the silver chloride formed and the mass of the original sample‚ you will be able to calculate the percent of silver in the alloy. Because the results are based on the mass of a product‚ this procedure is classified as a gravimetric analysis. Silver and copper are very nonreactive
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The connections with Karl Marx‚ Martin Luther King Jr.‚ and Henry David Thoreau can be summarized as similar and contradicting. Each individual are similar‚ because they all have their personal view in regards to human society. However‚ with their new and unique views entering the human society‚ not everyone will accept and follow it. Therefore‚ it causes conflicts and contradiction among the people. To demonstrate these connections‚ I’ll use specific examples from their works. They considered
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experiment you will investigate the reaction of copper metal with oxygen in the air. Using stoichiometry‚ you can predict the amount of copper oxide (CuO) that could be produced if all the copper would react. However‚ when you perform the reaction yourself‚ you will discover that only some of the copper reacts to form black copper oxide. A stoichiometric calculation will allow you to determine the amount of copper oxide produced and the amount of unreacted copper remaining. In the second part of the experiment
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11 3/5/2013 Purpose: To determine the percent by mass of water in a hydrate of copper (II) sulfate hydrate. Hypothesis: I hypothesize that when the solution is heated the hydrate will convert to an anhydrous ionic compound. Then the percentage composition will be determined by weighing the mass of the white crystals. Materials: 400ml beaker‚ hot plate‚ tongs‚ scoopula‚ electronic balance‚ glass rod‚ hot pad‚ and 4g of hydrated copper (II) sulfate Procedure: 1. Measure the mass
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refers to the medium and the technology associated with the transmission of information as light impulses along a glass or plastic wire or fiber‚ about the thickness of a human hair. Fiber optic wire carries much more information than conventional copper wire‚ and is far less subject to electromagnetic interference. A single glass fiber can carry the equivalent of 100 channels of television or 100‚000 telephone calls‚ with even more capacity possible by encasing many fibers within one cable. Fiber
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the number of moles of anhydrous copper sulfate‚ percent comp of water in the hydrated copper sulfate‚ the mole ratio of moles of water and moles of anhydrous copper sulfate. Once this is all done‚ we found our percent error and compared it to the exact value. In the lab‚ we used the following tools: lab apron‚ lab goggles‚ clay triangle‚ bunsen burner‚ ring stand‚ flint striker‚ electronic weight‚ crucible‚ crucible tongs‚ scoopula‚ gas line‚ beaker‚ copper (II) sulfate‚ and paper towels. To
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Copper-Silver Nitrate Reaction Introduction In this experiment copper wire will be placed in a solution of silver nitrate. This single replacement reaction will produce a blue solution of copper II nitrate and solid silver. By weighing the reactants before the reaction‚ the mass of silver produced can be predicted. This theoretical yield can be compared to the actual yield of silver. Purpose Students will compare the theoretical mass of silver with the actual mass of silver from the single
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327 K Data Table 3 – Mass Measurements Object Estimated Mass (G) Actual Mass (G) Actual Mass (KG) Pencil 2.5g 4 g .004 kg 3 Pennies 5.5g 8.7 g .0087 kg 1 Quarter 6 g 5.6 g .0056 kg 2 Quarters‚ 3 Dimes 15 g 18 g .018 kg 4 Dimes‚ 5 Pennies 20 g 22.7 g .0227 kg 3 Quarters‚ 1 Dime‚ 5 Pennies 30 g 32.9 g .0329 kg Key Key‚ 1 Qtr‚ 4 Pennies 6 g 25 g 13.6 g 30.4 g .0136 kg .0304 kg Data Table 4 – Liquid Measurements MASS A MASS B MASS B-A Liquid Volume
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reaction. Copper(II) oxide will be synthesized from a known mass of copper(II) sulfate pentahydrate. Using the relationship of the balanced equation‚ and other stoichiometry relationships‚ you will calculate a theoretical yield of CuO‚ and your actual yield. You then will calculate a percent yield. Copper(II) sulfate pentahydrate will be dissolved in water and reacted using a double replacement reaction with sodium hydroxide. The addition of hydroxide ions to a solution containing copper(II) ions
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