is important that these organizations put themselves in the position where they are focusing on the prevention of certain illnesses such as heart disease‚ diabetes among others. The nature of the problem of vaccinations and access to vaccines relative to prevention and health maintenance. Health maintenance organization (HMO) is also in the business that I would term as preventative medicine‚ vaccination of patients can be classified as a prevention measure. Having access to vaccines takes into
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colorlessBoiling Point: 56.20CMelting Point: -95.30CDensity: 0.79 g/cm3 | Causes eye and skin irritation. May cause central nervous system depression. May cause liver and kidney damage. Causes respiratory tract irritation. Extremely flammable. | aniline | | Physical State: LiquidAppearance: oily - colorlessBoiling Point: 1840CMelting Point: -60CDensity: 1.0216 g/cm3 | Combustible. Hazardous in case of skin contact (irritant‚ permeator)‚ of eye contact (irritant)‚ of ingestion‚ of inhalation. Severe
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Purification of Acetanilide by Recrystallization Method Dupaya‚ Julian Victor M. Estacio‚ Jerwin Caesar A. Farnacio‚ Rebecca Ruth Gabito‚ Jose Luis F. Gallo‚ Cian Carlo M. Galvez‚ Joshua M. Group no.4‚ 2D-Medical Technology‚ Faculty of Pharmacy‚ University of Santo Tomas ABSTRACT Recrystallization is a method for purifying solid organic compounds. The process is dissolving the solid to be purified in a hot solvent and cooling the solution slowly‚ this allows impurities with different
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In this experiment‚ acetanilide‚ the crude product of acetylation of aniline and acetic anhydride‚ was used as the pure organic compound. Crude acetanilide underwent crystallization process using the preferred recrystallizing solvent‚ water. The crystallization process was when crude acetanilide was placed in hot water bath and was cooled after in an ice bath which would then yield to the formation of crystals of pure acetanilide. The percentage yield form the crude acetanilide was 94.59%. The percentage
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Title: Acetanilide Synthesis Objective: To synthesize Acetanilide by recrystallization. To check its purity by calculating its percent yield. Introduction: Aniline is a primary aromatic amine and weak base which forms salts with mineral acids. In acidic solution‚ nitrous acid converts aniline into a diazonium salt that is an intermediate in the preparation of a great number of dyes and other organic compounds of commercial interest. When aniline is heated
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EXPERIMENT 5 - Preparation of Acetanilide Preparation and purification of Acetanilide [pic] Purpose: a) To synthesis acetanilide by reaction of aniline and acetic anhydride. b) To purify acetanilide by crystallization method from water c) Purity check by melting range Equipment / Materials and Hazars: hot plate beakers(150‚250mL) ice stirring rod spatula Büchner
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Recrystallization Abstract: Technical grade aniline was reacted with acetic anhydride to give acetanilide a dark brown color‚ due to the presence of impurities. Crystallization of the crude product from water was combined with decolorization with activated carbon‚ furnished pure acetanilide as white flakes‚ melting point 112-115°C‚ yield 70.3%. Experimental: 2 grams of technical grade aniline and 15ml water were placed in a 125ml Erlenmeyer flask. Then‚ 2.5ml of acetic anhydride was
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RECRYSTALLIZATION OF ACETANILIDE ABSTRACT Recrystallization is the primary method for purifying solid organic compounds through the differences in solubility at different temperatures. In this experiment‚ a suitable solvent was first determined. Acetanilide was produced by acetylation of aniline with acetic anhydride. The crude acetanilide was dissolved in a solvent in a heating water bath. The hot solution was filtered and the filtrate‚ cooled slowly in an ice bath as crystals started forming
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The word atom is derived from the Greek word atom which means indivisible. The Greeks concluded that matter could be broken down into particles too small to be seen. These particles were called atoms. Atoms are composed of three types of particles: protons‚ neutrons‚ and electron. Protons and neutrons are responsible for most of the atomic mass. Example; if a person weighed 150 lbs. approximately 149 lbs. and 15 ounces of that person would be comprised of protons and neutrons while only 1 ounce of
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The effect of food source (mung bean Vigna radiata vs. black-eyed pea Vigna unguiculata) on relative inhibition of acetylcholinerase due to malaoxon in bean beetle Callosobruchus maculatus Background and Hypotheses: Recent studies‚ most notably Gbaye et al. (2011‚ 2012)‚ have investigated the sensitivity of bean beetles in the genus Callosobruchus to organophosphate insecticides (OPs). Economically this is important work given that these beetles are pests that threaten agricultural yields
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