Lab 2 Report for MATSE 473 Determining Molecular Weight using Solution Viscosity Name: Mengfang Li Group D Lab Partners: Michael Lorenzo‚ Peter Mcclure 01/24/2012 Introduction: This lab was designed to demonstrate the method to measure the intrinsic viscosity of the prepared polystyrene. Intrinsic viscosity‚ which is measured from the flow time of a solution through a simple glass capillary‚ has considerable historical importance for establishing the very existence of polymer molecules
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Also known as: ethanoic acid‚ Glacial acetic acid‚ Ethylic acid‚ Vinegar acid‚ Acetic acid‚ glacial‚ Methanecarboxylic acid‚ Acetasol‚ Essigsaeure Molecular Formula: C2H4O2 Molecular Weight: 60.05196 Acetic acid is a weak acid which is probably most famous for being the primary acid in vinegar. In fact‚ acetic acid has a wide range of uses beyond sprinkling on salads‚ and it is produced in large volumes all over the world. People have been working with this acid in a number of contexts for
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of the molecular weight to the rate of diffusion Based on the experiments‚ sd f f f f s wrefwe fwe rfwjv rwefhnw fwer fwe fwef fwe fwe fwe fwef wef w fwe fwe From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search Sucrose is the organic compound commonly known as table sugar and sometimes called saccharose. This white‚ odorless‚ crystalline powder has a pleasing‚ sweet taste. It is best known for its role in human nutrition. The molecule is a disaccharide derived from glucose and fructose
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Introduction Glucose is very important in our daily lives. It gives us energy to carry out all of our activities. Cells in our bodies need glucose to respire and in the process release the energy we need. Glucose is also a type of carbohydrate. It has a chemical formula of C6H12O6 and is a monosaccharide reducing sugar (Kolej Mara Banting – Students’ Handbook for Biology HL Year 1). It is the simplest form of carbohydrate. In this experiment‚ sulphuric acid‚ H2SO4 and potassium permanganate
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Experiment 3: Cryoscopic Determination of Molecular Weight Aim: The primary objective of the experiment is to calculate the total molecular mass of the compound benzoic acid in a predetermined amount of cyclohexane. Introduction: One of the key concepts in this experiment is the term freezing point depression. The definition of this phrase is that when a solute is dissolved into a solvent‚ their collective boiling point will be less than that of the original boiling point of the solvent. This incidentally
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Low Molecular Weight Heparin Paper Low molecular weight heparin is typically used for patients who need to be treated for deep vein thrombosis. Deep vein thrombosis (DVT) is a blood clot (thrombus) in a deep vein usually in the legs. These clots are dangerous because they can break loose‚ travel through the bloodstream to the lungs‚ and block blood flow in the lungs (pulmonary embolism). There are many reasons why clots form in a patient. Mainly
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____________________ ____________________ ____________________ ____________________ Title: Determination of Molecular Weight of a Volatile Liquid By Vaporization: Dumas Method Background of the Study Problem In this experiment‚ an unknown liquid is in need to be identified and one of the key factors to identify it is to determine its molecular weight. In order to determine the molecular weight of a particular substance which in this experiment’s case is a volatile liquid‚ the need to convert the liquid
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The effect of molecular weight on the diffusion rates of Potassium permanganate (KMnO4)‚ Potassium dichromate(K2Cr2O7) and Methylene Blue^1 _________________ Group 3 Sec. X-1L February 6‚ 2012 ____________________ ABSTRACT The effect of molecular weight on the diffusion of substances were tested through the use of agar-water gel with three wells placed in a petri dish. Drops of three different substances namely: Potassium
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Task 1c – M3: Glucose Solution Concentration (%) Absorbance (Arbitrary Units) 1 1.61 0.1 0.32 0.01 0.23 0.001 0.22 How to use a Colorimeter: • A Colorimeter measures the absorbance of particular wavelengths of light by a specific solution. • Firstly to use the Colorimeter you must switch it on 5 minutes before use to allow it to stabilize. Next select the most appropriate filter for the analysis and then anter it into the light channel or the selector depending on the type of Colorimeter you
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results compare with your prediction? The molecules were too large to pass through. This is what I predicted on my Hypothesis. 3. Describe the results of the attempts to diffuse glucose and albumin through the 200 MWCO membrane. How well did the results compare with your prediction? The glucose diffused through the 200 MCWO membrane while the albumin didnt. 4. Put the following in order from smallest to largest molecular weight: glucose‚ sodium chloride‚ albumin
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