Acetylsalicylic Acid (Aspirin) Synthesis Telow‚ AJV Sumicad‚ CJ‚ Tavanlar‚ EMMT‚ Chem 40.1‚ Institute of Chemistry‚ University of the Philippines Los Baños I. Introduction Organic synthesis is the process where a desired organic compound is constructed or prepared from commercially available materials. The objective of organic synthesis is to design the simplest synthetic routes to a molecule. Aspirin‚ also known as acetylsalicylic acid is as salicylate drug often used as analgesic
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Journal of Corporate Finance 11 (2005) 85 – 106 www.elsevier.com/locate/econbase Additions to corporate boards: the effect of gender Kathleen A. Farrell a‚*‚ Philip L. Hersch b a Department of Finance‚ University of Nebraska-Lincoln‚ Lincoln‚ NE 68588-0490‚ USA b Department of Economics‚ Wichita State University‚ USA Received 1 November 2003; accepted 1 December 2003 Available online 20 April 2004 Abstract During the decade of the 1990s the number of women serving on corporate boards increased
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People constantly engulf trans fat foods which is life threatening‚ the government has decided to act upon this harmful cause to try to prevent any further death from obesity with lowering or removing almost all trans fat foods. The community thinks that this act will prevent the decision of civil choice in addition the government will making the decision from now on and the future. With a decreasing amount of trans fat foods healthier foods will now take place in most of people’s diets declining
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Investigating the effects of acid rain in the growth of cress seedlings IntroductionAcid rain is rain or any other form of precipitation‚ which is unusually acidic. It has harmful effects on plants‚ animals and buildings. Acid rain is mostly caused by human emissions of sulphur and nitrogen compounds which react in the atmosphere to produce acids. Acid rain can slow the growth of vulnerable forests and cause leaves and needles to turn brown and fall off. In addition‚ it depletes minerals from the
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The Trans Mountain pipeline expansion is branded as a project that is going to increase revenues to 73.5 Billion dollars‚ employment‚ tax benefits‚ and return any farmland or wetland they disturb back to it’s place (Trans Mountain‚ 2014). Though‚ Trans Mountain is persuasive as to how the pipeline will protect the environment and indigenous people‚ and how the pipeline increases revenues. The company fails to mention the environmental damage that will be done when this pipeline is built‚ and the
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lab‚ caproic acid was synthesized in a multi-step process that involved the synthesis of three intermediates – diethyl n-butylmalonate‚ potassium n-butylmalonate‚ and n-butyl malonic acid respectively. An IR was used to characterize the starting material‚ n-bromobutane‚ and the first intermediate‚ diethyl n-butylmalonate; while IR and NMR were used to characterize the final product‚ caproic acid. Reactions‚ Mechanism and Theory Caproic acid a.k.a n-hexanoic acid is a carboxylic acid derived from
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The trans theoretical model (TTM) (Prochaska and DiClemente‚ 1979) proposed that any health behavior change is not automatic but it involves progress through five stages of change. The individual’s cognitive level and behavior decisions differ from each of the five stages. Trans theoretical model interventions are mostly delivered by first identifying the stage in which the individual is present and his/her willingness to change. These changes could be lifestyle changes. The TTM is based on the
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Tablets I. Introduction An acid-base titration is a method of neutralizing strong acids. Unbeknownst to many‚ acid-base titrations occur on a daily basis. Our stomachs use acid to help us digest our food – approximately .155 hydrochloric acid (HCl) with a pH of 2-3. When too much of this acid is formed in the stomach‚ heartburn and other discomfort occurs. This is when people grab for their antacids; these are bases that neutralize the excess acid in the stomach. Calcium carbonate
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Introduction Extraction is a purification technique used in organic chemistry to separate compounds from a mixture of two or more compounds. There are three different extraction techniques: liquid-liquid extraction‚ solid-liquid extraction and chemically active extraction. All three types of extraction follow the same principle. Organic molecules dissolve in organic solvents and polar molecules dissolve in aqueous solvents. This phenomenon is observed because of the intermolecular forces between
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BUFFERS By: Luis P. Bazan‚ RPh.‚ Ph.D. A buffer solution is a solution of: 1. A weak acid or a weak base and 2. The salt of the weak acid or weak base Both must be present! A buffer solution has the ability to resist changes in pH upon the addition of small amounts of either acid or base. Consider an equal molar mixture of CH3COOH and CH3COONa CH3COOH (aq) H+ (aq) + CH3COO- (aq) Adding more acid creates a shift left IF enough acetate ions are present 16.3 Which of the following
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