Objective In this experiment we would be ascertaining the percentage content of ethanol in 3 samples (spirit‚ wine and a beer). We would be comparing the concentration of ethanol to that of 25%propanol which would act as an internal standard. Method To set up the standards for a calibration curve we would make solutions of different concentrations of ethanol. Using a 25cm3 volumetric flask we would put 10cm3 of 25% Propanol into each one which would act as an internal standard. We would
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Experiment 7 : Analysis of commercial vitamin C tablet Title: Determination of the vitamin C content (ascorbic acid) of a commercial vitamin C tablet and compare the result with the value specified by the manufacturer. Theory : In this experiment‚ we have to determine the vitamin C content of a commercial vitamin C tablet which is the mass of ascorbic acid in the tablet. As iodine is a weak oxidizing agent used mainly for the determination of strong reducing agents‚ ascorbic acid C6H8O6 (aq) can be
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Nathalie Dagmang Co-workers: Annjaneth Briones and groups 5‚ 6‚ 7 and 9 Group 8 Date Performed: February 3‚ 2011 Results and Discussion Report 9: Redox Titration: Winkler Method for Dissolved Oxygen Determination The three main objectives of the experiment are to (1) determine dissolved oxygen (DO) in water using the classical method (redox titration)‚ (2) discuss the chemistry behind the Winkler method for DO analysis and (3) describe the sampling technique for the analysis of DO in water sample
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Page 1 of 2 Staple this form to the manuscript that you reviewed. These two are to be submitted with the final version. Reviewer’s Code Name: Phenylalanine ^_^ Section: U-3L Date: September 12‚ 2012 Title of Paper Reviewed: Determination of the Earth’s Magnetic Field Configuration by using Bar Magnets and Iron Filings and Measurement of its Intensity with Tangent Galvanometer Author(s) Code Name: Shiela Grace V. Ramirez and Aurea Ellaine S. Mallari Here are some reminders
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. At the time of writing Keynes’ approach to the demand for money was radical. However‚ The General Theory received much criticism and lead other economists to try and justify Keynes’ findings‚ particularly in respect to the inverse relationship between the interest rate and the demand for money. Of these‚ the most widely quoted model is the Baumol/Tobin inventory-theoretic-model developed separately by William Baumol (1952) and James Tobin (1956) resulting in similar conclusions. They are often
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Conductimetric Titration and Gravimetric Determination of a Precipitate Objective: * Measure the conductivity of the reaction between sulfuric acid and barium hydroxide * use conductivity values to determine equivalence point * measure mass of a product to determine equivalence point gravimetrically * calculate molar concentration of barium hydroxide solution Procedure: * First‚ combine 10.0 mL of the Ba(OH)2 solution with 50 mL of distilled water. Then‚ measure out 60 mL
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Abstract In this lab‚ the relationship between Spanish moss (Tillandsia usneoides) and one of its host species‚ the Southern live oak (Quercus virginia) was observed on a portion of the University of Florida campus in Gainesville‚ FL. Spanish moss is an atmospheric epiphyte and the Southern live oak is a hardwood tree. Some possible interactions between the two species were neutralism‚ commensalisms‚ mutualism‚ and parasitism. It was hypothesized that the relationship would be commensalism‚ with
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IN VITRO EVALUATION OF ABILITY OF DENTAPORT ROOT ZX FOR ROOT CANAL LENGTH DETERMINATION AND ABILITY OF DENTAPORT TRI AUTO ZX TO START AUTO APICAL REVERSE MOTION AT THE CORRECT WORKING LENGTH By: Dr. Adil Shahnawaz BDS Supervisor: Dr. Alia Ahmed FCPS‚ BDS Assistant Professor Department of Operative Dentistry Islamic International Dental Hospital INTRODUCTION: The history of
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Determination of Phosphorus Content of Fertilizer: Skill Building Lab © 2011‚ Sharmaine S. Cady East Stroudsburg University Gravimetric Analysis Skills to build: Using vacuum filtration Using a digital balance Using mass stoichiometry Doing a gravimetric analysis Fertilizer Scientists estimate that the earth ’s soil contains less than twenty percent of the necessary organic nutrients needed to meet our current food production. Carbon‚ hydrogen‚ and oxygen used to synthesize
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purity‚ consistency) * efficacy (therapeutic indications‚ clinical studies‚ pharmacological investigations) * safety (adverse reactions‚ drug interactions‚ contraindications‚ precautions) Quality Control 1. Moisture Determination/Water Content Determination * Many drugs in the U.S.P. and N.F. contain varying quantities of water either as water of crystallization (hydrates) or as water in the adsorbed from. i. Water of crystallization is water that occurs in crystals
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