Preparation of an Ionic Compound from Aluminum Metal October 6‚ 2010 The purpose of this laboratory project was threefold‚ in that it presented three main objectives. The first objective was to prepare the ionic compound alum from aluminum powder. The alum was produced from the reduction-oxidation reaction of aluminum with potassium hydroxide and sulfuric acid in water. The second objective was to then analyze the alum product for water crystallization; that is‚ to determine the value of x in
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Determining the Solute Concentration of a Potato Aim: In this investigation I am going to work out the sugar concentration of a potato. I aim to find this out by putting potato cores into various concentrations‚ measuring the mass before and after. Due to osmosis the potato cores will change in mass to make the concentrations at an isotonic level‚ helping us to work out the mass of the potato. I predict that potato in the weaker solutions will gain mass‚ because some water will be absorbed by the
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its defeat to aluminum‚ included the fact that it could only be rolled thicker than aluminum; it became brittle when warm‚ reducing its malleability greatly‚ and the tin foil created a strange aftertaste‚ which was undesirable to many. During the beginning of the 1800s‚ scientists and companies began to experiment with aluminum foil. Reynolds Wrap‚ started by Richard Reynolds‚ became the first company to use aluminum foil instead of tin. His reasons were simple and logical: aluminum rolled thinner
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Amazing Power of Aluminum Foil Overview Greatly known for its negative impacts but‚ a study revealed of its positive health impacts that outweigh the negative. Aluminum foil is used to cover preserved food in order to make it last long and avoid any contamination. It has ability to heal wounds and scars in a way that you have to wrap the affected area with the foil for a period of 10 hours before unwrapping. Repeat the procedure in 3 times a month to enable permanent healing. Aluminum foil in the kitchen
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1. The process of determining whether an entrepreneur’s idea is a viable foundation for creating a successful business is known as a: 2. Porter’s five forces model assess industry attractiveness by surveying these five factors: 3. The strongest of the five forces in most industries is: 4. The force from the five forces model that considers economies of scale‚ initial capital requirements‚ cost advantages relevant to company size‚ and lack of brand loyalty is the: 5. The primary purpose of the
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LAB REPORT 4 DETERMINING AN EQUILIBRIUM CONSTANT CAUSION 1. Potassium thiocyanate (KSCN) is hazardous 2. Wear protective material before performing the experiment. INTRODUCTION This experiment outlines the techniques necessary to determine the equilibrium constant for the formation of an iron(III) thiocyanate complex ion (FeSCN2+) from Fe3+ and SCN- . The quantitative preparation of several solutions and subsequent measurement of the solution absorbance
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One possible source of scientific error that could be present in the experiment is that when placing the aluminum foil onto the center of the pan‚ the flame under foil in centered only at the centered. The unknown substances are placed around the side of the aluminum foil‚ only allowing the flame’s heat to hit the center of the aluminum foil and the area around it. This possible source of error may have affected the outcomes of the experiment because the unknown substances present on the foil may
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breathing overexposure‚ as pulmonary edema may be delayed. ii. Dermal exposure Ans : Quickly remove contaminated clothing. Immediately wash contaminated skin with large amounts of soap and water. Seek medical attention immediately. iii. Eye exposure Ans : Immediately flush with large amounts of cool water. Continue for at least 30 minutes‚ occasionally lifting upper and lower lids. Remove contact lenses‚ if worn‚ while rinsing. Immediate medical attention is necessary. b. Chemical : Etanol
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In this report‚ the concentration of total protein and albumin were calculated with the interpretation of a standard curve. To determine the concentration of total protein in human serum‚ a total protein assay was performed by using the Biuret reagent. Proteins react to this compound because it contains two amide bonds. When the Biuret reagents is introduced to a sample of protein‚ it forms a blue or violet complex. The concentration of albumin in human serum is determined by using the Bromocresol
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Wooden Versus Aluminum Bats What happened to the old fashioned crack of the bat? The wooden bat has been used since the game’s establishment in 1864. An aluminum bat is more dangerous that a wooden bat due to the advanced technology. However‚ I believe that a wooden bat is better than a aluminum bat. The baseball bat controversy has been lingering over amateur baseball since the NCAA (National Collegiate Athletic Association) allowed the use of aluminum bats for the first time in 1974 (Adelson)
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