it exists as white powder or colourless crystals with a chemical formula of H3BO3 or B(OH)3. Apparatus and materials: •Sodium tetraborate •Concentrated hydrochloric acid •Concentrated sulphuric acid •Methyl red indicator •Mannitol •Beaker •Methanol •Distilled water •Electric heater •Ice •Test tube •Test tube rack •Glass rod •Suction funnel •Suction pump •Filter flask •Filter paper •Spatula •Watch glass •Splint Procedures: 1. About 10g of sodium tetraborate (borax) is
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a. 2. The first part of this report defines a portfolio and how it can benefit the investment decisions of Northern Telecom. 7. The clear problem that has risen follows: the benefit of the air contaminate model often maligns by aborting launches‚ perhaps unnecessarily. 8. As a medical assistant/receptionist‚ my primary responsibilities included completing and processing insurance claim forms. I prepared the patient and examination room for surgeries and assisted in the manufacturing‚ fitting‚ and
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138.17 g 57 °C t-Butyl alcohol 74.12 g .79 g/ml Sulfuric Acid 98.08 g 1.84 g/ml Methanol 32.05 g Ethanol 46.08 g 1‚4-Di-t-butyl-2‚5-dimethyloxybenzene 250.37 g 104-105 °C Safety Information: Use caution with the sulfuric acid as it is corrosive and can cause severe burns. Keep heat and flames away from the methanol and ethanol‚ as both are flammable. Dispose of all wastes in the proper containers. Dispose of all broken glass in the broken
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The Mass of Acetylsalicylic Acid in Aspirin ------------------------------------------------- Purpose The purpose of the lab is to determine the mass of the ‘active ingredient’ in a commercial ASA tablet. ------------------------------------------------- ------------------------------------------------- Introduction There are three main theories surrounding acids and bases including the Arrhenius‚ Bronsted-Lowry‚ and Lewis theories. The Arrhenius theory of acids and bases states that
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over crushed ice (25g)‚ and waited for 5 minutes until the ice was completely melted. The product‚ after isolation by vacuum filtration‚ was washed with two portions of cold water (30mL) and ice-cold methanol (25mL). Recrystallization of product was carried out with minimum amount of solvent methanol‚ which resulted in the final product of methyl m-nitrobenzoate (3.84g‚ 0.0212mol)‚ with the percent yield of
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acetate (1.5 mls/student)‚ dichloromethane (6 mls/ student)‚ 30% acetone in heptanes (3 mls/student)‚ 95% ethanol (20 mls/student) wk 4: 1‚3 diphenylacetone (0.5 g/student)‚ triethylene glycol (5 mls/student)‚ 40% benzyltrimethylammonium hydroxide/methanol (0.5 mls/student) Part A: Thiamine catalyzed condensation benzoin condensation of benzaldehyde Procedure: (Week 1) Dissolve
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1. Introduction Ice cream is a favorite of millions‚ because a delicious‚ attractive and relatively inexpensive food item (Marshal and Arbuckle‚ 1996)P2‚7. The protein content of ice cream has an excellent biological value because it contains the essential amino acids such as tryptophan and lysine. So target groups such as elderly can get their required protein from ice cream(Goff and Hartel‚ 2013)P35. In the modern diet‚ here is a concern that excessive usage of fats leads to increasing propagation
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Basics of Fluid Mechanics Genick Bar–Meir‚ Ph. D. 2729 West Jarvis Ave Chicago‚ IL 60645-1335 email:barmeir at gmail.com Copyright © 2010‚ 2009‚ 2008‚ 2007‚ and 2006 by Genick Bar-Meir See the file copying.fdl or copyright.tex for copying conditions. Version (0.2.4 March 2‚ 2010) ‘We are like dwarfs sitting on the shoulders of giants” from The Metalogicon by John in 1159 CONTENTS Nomenclature GNU Free Documentation License . . . . . . . . . . . . . . . . 1. APPLICABILITY AND DEFINITIONS
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writing balanced chemical equations. Hypothesis If methyl-2-propanol is reacted with formic acid then the product should be 2-methylpropyl methanoate. If 1-octanol is reacted with acetic acid then the product should be 1-octyl ethanoate. If methanol is reacted with salicylic acid then the product should be methyl salicylate. If 1-pentanol is reacted with acetic acid then the product should be pentyl ethanoate. Materials Equipment 4 test tubes graduated cylinder (10 mL) 150 mL
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were used. The first 4 formulations by using acid method while the other four formulations by adding different thickening agent. The pH of dadih produced using the eighth formulation is 6.05 while the o Brix obtained is 17.0. On the other hand‚ the viscosity is 0.6594. For sensory evaluation‚ the scores obtained for texture‚ flavour‚
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