Determination of the Concentration of Acetic Acid in Vinegar Lab Exercise 4 CHEM 1106 9/19/12 Purpose: Standardize a sodium hydroxide solution using a primary standard acid. Determine the molarity and the percent by mass of acetic acid in vinegar by titration with the standardized sodium hydroxide solution. Introduction: Vinegar is a dilute solution containing acetic acid. Since vinegar has a low pH‚ it can be titrated with a base. Titration is a method used in order to ascertain
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Chemistry Internal Assessment Title: Determination of the percentage (%) of ethanoic acid in vinegar Date Experiment was performed: 1st April 2011 Criteria Assessed: DCP‚ CE Apparatus: 2 conical flasks 1 250cm3 volumetric flask ±0.30cm3 Electronic Balance ±0.10g 50cm3 Burette±0.1cm3 25cm3 Pipette±0.06cm3 Materials: 0.20M HCl (±0.02moldm-3) 1.1g solid NaOH (±0.1g) A solution of vinegar of unknown concentration (density= 1.05gcm-3) Phenolphthalein Method: * A solution of NaOH was
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Experiment #1: Introduction to Experimentation Submitted by: Neann Klara M. De Jesus BS Psychology II Submitted to: Dr. Geraldine E. Tria ABSTRACT SUMMARY The first experiment done by the class was called “Introduction to Experimentation”. Its main objective is to give basic knowledge about some of the logic of experimentation. The class was divided into groups of 2. In each group there was an experimenter (E) and a subject (S). The experimenter instructed
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absence of one in the prokaryotes; Eukaryotes also have distinct membrane-bound organelles‚ while prokaryotes do not (Stanier et al.‚ 1970a; Mauseth‚ 2009). It is after discovery and examination of these organelles that first led to the Endosymbiont Hypothesis or Endosymbiont Theory‚ as it is sometimes called (both terms are used throughout). In this essay we shall look at the history of the theory‚ how it was formed‚ who the most influential collaborators were‚ and how it is applied to the evolution
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Reading/Video questions for Diamond’s Guns‚ Germs‚ and Steel Prologe “Yali’s Question” 1. What is Yali’s question and why did it motivate Diamond to write this book? Yali’s question was “Why is it that you white people developed so much cargo and brought it to New Guinea but we black people have little cargo of our own?” Jared Diamond wrote this book to answer Yali’s question because he didn’t have an answer when Yali asked him the question. 2. What are other ways that Diamond asks
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Vinegar is a clear liquid that is made up of acetic acid (HC2H3O2)‚ and water (H2O). This solution is common in an average household for it is used for cooking and cleaning. By definition‚ a titration is a technique where a solution of known concentration is used to determine the concentration of an unknown solution. Titrations are performed in chemistry‚ along with different manufacturing companies‚ to help determine the concentrations of acids and bases when they are unknown‚ when a neutralization
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BENT STEEL My assignment is to choose a medical diagnosis on a standard medical term. Then‚ write a four page essay written in layman’s terms about the diagnosis. I chose ALS. I can give you a definition. ALS is a neurodegenerative disease that affects nerve cells in the brain and spinal cord. I can tell you what the acronym ALS stands for. It stands for amyotrophic lateral sclerosis. I can break the word down‚ in medical terminlogy. (A-/without‚ Myo/muscle‚ -trophic/nourishment lateral/side
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Introduction In my report I will discuss what I did as an experiment and what I hope for it to achieve. Firstly I carried out an experiment to assay the effectiveness that a range of disinfectants have on the growth of ecoli and whether or not it can prevent it from growing. From the experiment i should be able to see that some disinfectants have a greater effect than others do. From this I shall then draw a conclusion and evaluation on what was the most effective‚ and could there have been any
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of Galvanized Steel Purpose The goal of this lab is to determine the thickness of the coating of zinc on galvanized steel using the mass and volume of a sample of galvanized steel‚ and by using a larger mass; it is possible to minimize percent uncertainty. Reactions Molecular: Complete Ionic: Net Ionic: Oxidation Half Reaction: Reduction Half Reaction: Data and Calculations Density of Zinc: Density: Specifications of Galvanized Steel from Trial 1:
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developed an Oracle Siebel Solution for customer support groups‚ incorporating Computer Telephony Integration‚ Service Requests and Activity Management‚ Oracle Siebel Order Management‚ and multiple integrations with legacy order fulfillment systems using Fusion Middleware. After the implementation of Customer Care program‚ a customer satisfaction survey showed an increase in score from 66% in 2008 to 88% in 2010. View Complete Abstract | Download Infosys Oracle EBS R12 upgrade helps MoneyGram
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