Acetylsalicylic acid is the active pharmaceutical ingredient in aspirin and can be synthesized by the esterification reaction of salicylic acid and acetic anhydride in the presence of an acid catalyst. An esterification reaction is when an acid is converted into an ester by combining with an alcohol and removing a water molecule. When heating the salicylic acid mixture in the warm water bath‚ the mixture should be removed from the bath within 8 minutes‚ to reduce the chance of the acetylsalicylic acid decomposing
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2012. http://answers.yahoo.com/questi on/index?qid=201010040 03856AAUmexI www.answers.com Maitland‚ Jr Jones (1998). Organic Chemistry. W W Norton & Co Inc (Np). p. 139. ISBN 0-393- 97378- 6. Hunter JE (November 2006). "Dietary trans fatty acids: review of recent human studies and food industry responses". Lipids 41 (11): 967–92. PMID 17263298. Crystal‚ Gary. (2003). What is glycerin? Retrieved from: http://www.wisegeek.com/what- is-glycerin.htm on February 15‚ 2012. Malubay‚ Raymund
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Amino acid present in the lumen of the small intestine The goal is to cross through the epithelial cell membrane to enter into the epithelial cell’s cytoplasm – its charged cuz of side chains To get through the membrane the amino acid must cross the Simple columnar epithelial cells lining the apical surface of the small intestinal tract. These cells are impermeable to any harmful bacteria that may be ingested by the body‚ but permeable to necessary ions. Absorption of amino acids occurs through
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Airplanes crashed into loved ones homes and their work places. The poor American people were running for shelter when most were shot and killed or very badly wounded. The attack went on for two hours from 8 a.m to 10a.m. The soldiers‚ the people of pearl Harbor and people just visiting had to hopefully survive the attack. Most of the people had died or were dying only some of the people were wounded and hoping to stay alive. The Japanese took down or destroyed almost 20 American naval Vessels
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INTRODUCTION Sulphuric Acid is an important chemical‚ which has large-scale industrial uses. Its major user is the phosphate fertilizer industry. Other important applications are in petroleum refining‚ steel pickling‚ rayon & staple fiber‚alum‚ explosives‚ detergents‚ plastics and fibers etc. Sulphuric Acid Industry is very old and has been continuously adopting the technological developments. It started with Lead Chamber process followed by contact rocess with Single Conversion Single Absorption
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Hypothesis: The higher the concentration of hydrochloric acid‚ the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration‚ the weaker the reaction will be as there will be fewer particles so less chance of a collision and a lower rate of reaction. Equipment: Conical flask – to hold the hydrochloric acid and marble chips Boiling tube – to hold and indicate
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Unit 4 Assessment 2-Benzoic Acid Synthesis Synthesis and Investigation of Benzoic Acid Our aims: Create benzoic acid using benzaldehyde and hydrogen peroxide. Then remove some impurities from the benzoic acid crystals. Apparatus: Titration Pipette (25 cm3) Burette (50 cm3) Retort stand Clamp Conical flask (250 cm3) Volumetric flask (250 cm3) and stopper White tile Beakers (250 cm3) Dropping pipette Filter funnel Deionised water Phenolphthalein indicator Volumetric flask
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in this attack includes Japan‚ United States‚ Germany‚ Italy‚ and China. Before the attack happened‚ in July 1937 Japan invaded North China from Manchuria. In Jan of 1940 Yamamoto planned to destroy the U.S. Navy in Hawaii and weaken the Americans.In July of 1940‚ the US forced trade sanctions which were then followed by an official ban and then aiming towards Japanese military in Asia. In Jan. of 1941 Administrator‚ Yamamoto began to communicate with other Japan officers about the attack on Pearl
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kcal 5 ) The R group on some amino acids have a branched chain - Which one of the following is not a branched-chain amino acid? * Peptide 6 ) What is the protein requirements for a 154 pound male? * 70 kilograms 7 ) As the body uses glucose to supply energy for the brain‚ red blood cells‚ and nervous cell tissues. At rest what percentage of glucose does it take for the body to function? * 19 % 8 ) With excess protein intake amino acids are converted to fat as a last resort
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MEDIA EDUCATION RESEARCH CENTRE‚ UNIVERSITY OF KASHMIR CHANGE IN INDO-PAK RELATIONS POST 26/11 Role of Media Ashraf ul Hassan. 6/20/2012 The 2008 Mumbai attacks were 11 coordinated shooting and bombing attacks across Mumbai‚ India’s largest city‚ allegedly by terrorists who came from Pakistan. Immediately after the assault‚ extensive media coverage had created war hysteria as tempers were raised across the country to launch a war against the neighboring Pakistan. Class: M.A (3rd Semester)
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