LABORATORY REPORT 4 PREPARATION OF ALUM FROM ALUMINUM METAL Huy Nguyen October 2nd‚ 2012 The objective of the laboratory is to synthesize alum (KAl(SO4)2.xH2O) from aluminum powder and to determine the proportion of water in the alum crystals. Alum is a product from the reaction between potassium hydroxide and sulfuric acid. The reaction include several steps‚ as followed: Aluminum powder reacts with potassium hydroxide to generate Al(OH)4- ions and release hydrogen. 2 Al(s) + 2 KOH(aq)
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PREPARATION OF POTASH ALUM FROM SCRAP ALUMINUM Introduction Aluminium because of its low density‚ high tensile strength and resistance and resistance to corrosion is widely used for the manufacture of aeroplanes‚ automobiles lawn furniture as well as for aluminium cans. Being good conductor of electricity it is used for transmission of electricity. Aluminium is also used for making utensils. The recycling of aluminium cans and other aluminium products is a very positive contribution to saving
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Analysis of Alum‚ AlK(SO₄)₂ •12H₂O Purpose The purpose of the experiment is to confirm whether the compound is Alum. Introduction Percent composition is defined as part divided by whole multiplied by 100. Water of hydrogen is defined as the amount of water produced into a molecule prepared in an aqueous solution. Molecular formula indicates the actual numbers and type of atoms in a molecule (notes). Procedure The procedure in this experiment is to determine melting point and mole ratio of
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Marriott Corporation Evaluating the cost of capital 1. What is the weighted average cost of capital for Marriott Corporation? 1 (a) What risk-free rate and risk premium did you use to calculate the cost of equity? R (f)‚ or risk free rate used for calculating cost of equity was the Geometric Mean (GM) for LT US govt. bond returns (Exhibit 4). We used the overall GM of 1926-1987 of 4.27%. This is because this is the period that Marriott has been in operation and would be a good reflection
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Crystal Research Paper A crystal is made up of the same materials that a regular glass is made of‚ such as silica‚ soda‚ and lime‚ but the addition of lead oxide is what gives crystals their shine. A bead has to have 24% lead oxide added to qualify as leaded crystal. Contrary to the popular belief‚ crystals have been around for a long time. Ancient Egypt‚ Rome‚ and other groups have all used crystals for various purposes. It was used in medicine‚ magic and rituals‚ as offerings and currency‚ as
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Crystal jellyfish The Crystal jelly fish is a very unique marine animal. Known as the crystal jellyfish its scientific name is well known to be the Aquarium Victoria. The Aquaria Victoria is a saucer shaped Hydromedusa with a well developed velum‚ its size ranges within five to twelve centimeters in diameter. It has eighty or more narrow unbranched radial canals witch can extend to the margin of the bell. All tentacles extend from the margin of the bell‚ making the slender gonads run along most
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Hydrated Crystals LAB PURPOSE: The purpose of this lab was to determine the percent of water in the given hydrate. MATERIAL/EQUIPMENT LIST: Crucible and cover Clay Triangle Crucible Tongs PROCEDURE: 1. First‚ the crucible and crucible cover were cleaned and dried. 2. The crucible and crucible cover were then placed on the clay triangle and heated with the Bunsen Burner for 3 minutes. 3. After this‚ the crucible and crucible cover
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Strategy and the Crystal Cycle John A. Mathews ne of the unexplored areas of business dynamics is how the cyclical behavior of certain important industries poses strategic issues for incumbent firms as well as challengers. All frameworks used in strategy (such as the Porter’s “competitive forces” framework) attempt to capture the decisions made by businesses in the attempt to influence their “business landscape” (to use the language of Ghemawat).1 However‚ the frameworks rarely place these business
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Crystal Meadows of Tahoe‚ Inc Introduction Crystal Meadows of Tahoe (CMOT) is a holding company for two different ski resorts. The majority of revenues from this company come from the sale of lift tickets‚ ski rentals‚ skiing lessons‚ and food and beverage sales; revenues are also primarily generated during the winter months. CMOT has recently partnered with Toiyabe Resort Company for the development of a year-round ski resort in the Tahoe area‚ and have invested $5‚300‚000 in the venture. CMOT
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Crystal Cave of Giants The Naica mine is located in Chihuahua‚ Mexico and was first discovered in 1794. The mines primary interest was silver and gold until about the 1900’s when a large-scale mining began as Zinc and Lead become more valuable resources. This is the largest mine in the country that produces lead‚ zinc and silver‚ among other minerals. The entrance is located 1385 m above sea level in the north of the 12km.-long sierra Naica. In April of 2000‚ brothers Elroy and Javier Delgado
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