D_____ J_____ CARBOHYDRATES LAB May 22‚ 2013 Pre-lab Questions 1. The water in test tube No. 1 is a negative control. No reaction is expected to occur because water is not a carbohydrate. Reaction by a negative control is evidence of contamination. 2. The color changes expected for positive test results are Benedict’s test: orange to brick red Tollen’s test: metallic silver Starch iodine test: blue-black 3. Identify each of the samples in Part 1 as monosaccharide
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Cause and Effect on Acid Rain Introduction Beautifully crafted statues are now worn out or severely damaged‚ aquatic wildlife population are dying off‚ forests have lost the leaves that protect their trees and produce food‚ and the rates of lung diseases in humans are rising around the world. The cause of all of these problems can be linked back to acid rain. Most people don’t understand the concept or science behind acid rain. The common belief is that it’s a natural process‚ but it’s actually
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before a game? What’s the best thing to eat before a game? Before a game you want carbohydates(excuse the spelling) and minerals.Carbohydrates are a source of energy.One of the highest sources of carbrohydates is Pastas.Pastas store carbohydrates in you stomach for about 3 hours.In wich you could use for a soccer game.Gatorade would also be good but I’mn ot a 100% on that one. You’ve probaly heard of the cross-over from basketball but Soccer Maniac’s Site has kind of "developed" a soccer cross-over
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Kwok Tak Seng Catholic Secondary School S.6 Chemistry Experiment [9] – To Determine the Activation Energy of the Reaction between Br— and BrO3— in Acid Solution S.6 ( ) Name: [ ] ( ) Time allowed: 55 minutes Introduction: The reaction can be represented by 5Br—(aq) + BrO3—(aq) + 6H+(aq) → 3Br2(aq) + 3H2O(l) The progress of the reaction may be followed by adding a fixed amount of phenol together with some methyl red indicator. The
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HR in action case incident 3 1. Mr. Fisher made a number of mistakes‚ the first being his trying to set up and run a company in the American way. He did not investigate the local laws and cultures to see what‚ if any differences there would be in areas of sales and employment. He did not consider local taxing rules where foreigners have to have special visas and taxes are paid to maintain and keep those visas. He obviously does not understand that the cultural attitudes toward work are not the same
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PRODUCTION OF CITRIC ACID Introduction: Citric acid is a White solid‚C3H4OH(COOH)3‚soluble in water and slightly soluble in organic solvents‚ which melts at 153 oC. Aqueous solutions of citric acid are slightly more acidic than solutions of acetic acid. Traces of citric acid are found in numerous plants and animals‚ because it is a nearly universal intermediate product of metabolism. Large amount of the acid are found in the juice of citrus fruits‚ from which it is precipitated by the
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Amino Acids Glycine is the smallest of the amino acids. It is ambivalent‚ meaning that it can be inside or outside of the protein molecule. In aqueous solution at or near neutral pH‚ glycine will exist predominantly as the zwitterion. Alanine is a hydrophobic molecule. It is ambivalent‚ meaning that it can be inside or outside of the protein molecule. The α carbon of alanine is optically active; in proteins‚ only the L-isomer is found. Serine differs from alanine in that one of the methylenic
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April 7‚ 2015 Bilkent University Department of Industrial Engineering IE 262 Homework 3 Due Date: April 17‚ 2015 (Friday) 1. A hydraulic forging press is capable of exerting a maximum force of 1‚000‚000 N. A cylindrical work part is to be cold upset forged. The starting part has a diameter of 30 mm and a height of 30 mm. The flow curve of the metal is defined by K=400 MPa and n=0.2. Suppose that the coefficient of friction between the work part and the die is 0.1. a. In Excel‚ plot a graph of forging
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units in the four quarters? Why? 3. Assume 10‚000 units are sold each quarter in 2008. If the company adopted FIFO on January 1‚ 2008‚ how would this affect the financial statements? 4. In the “as if” income statements prepared by James Colburn‚ the costs of mower units and transportation were rising for 2007 and 2008. How would the company’s deliberations be affected if inventory purchase prices and transportation costs had been stable or falling over the two-year period? Read the case‚ Biovail
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beaches‚ wetlands‚ and estuaries from the spreading oil. Scientists also reported immense underwater plumes of dissolved oil not visible at the surface as well as a "kill zone" surrounding the blown well. Culling‚ selective killing is one solution to control the number of animals. The way that this is done‚ the game warden will
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