Synopsis: The main aim of the experiment is to find out the amount of calcium carbonate in toothpaste through back titration since calcium carbonate does not dissolve in water. A roughly weighed amount of calcium carbonate is mixed with hydrochloric acid and then titrated against sodium hydroxide. When the indicator turns from pink to orange‚ the volume of sodium hydroxide used is taken down. After doing some calculations‚ the average percentage of calcium carbonate in toothpaste is 19.2%. This average
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TITLE: Toxicity Testing and Determining the LC50 INTRODUCTION: Our main objective for this experiment was to determine which three chemicals were going to be the most toxic to the brine shrimp by adding drops of vinegar‚ bleach and ammonia to the controlled water. We found that the vinegar was the most effective and the quickest. The ending results were very interesting when being compared to our hypothesis and we learned that some chemicals can react faster than others and each contains a different
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In this local experiment‚ the goal was to use a polyacrylonitrile (PAN‚ (C3H3N)n) in addition to a chalcogel. This chalcogel is efficient at adsorbing I2 gas. Although just the chalcogel itself isn’t mechanically stable especially if it is to be used in the field for actual radioactive iodine capture. By creating a hybrid substance with the PAN and the chalcogel in a mixture‚ the theory is that they can create a mechanically stable efficient iodine capture method. This experiment did not study the
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you ever wondered what it would feel like to win 1st place at a competition? Or being the person who choreographed that winning dance? Becoming a dancer or dance instructor can help you lead to that accomplishment. After completing career Inventory test‚ two careers recommended for me are dance instructors and dancers. Dancer and dance instructors have similarities in what they do‚ yet have differences in how they do it. Dancers and instructors have very similar jobs. Both occupations require dance
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BIOL 1208 Writing Assignment 1 Cover Sheet I certify that the writing in this assignment is my individual work and is my intellectual property. It does not contain the ideas or writing of other individuals/authors. Sarah SanAngelo March 4‚ 2015 Author Date 8 Lab Section # Alex Fry Lab Partner BIOL 1208 Writing Assignment 1 Results Worksheet Lab Topic: Temperature Introduction: In this experiment‚ water and potato enzymes were mixed
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Fletcher‚ C.‚ Williams‚ R. (1992)‚ Performance Appraisal and Career Development‚ Stanley Thorne‚ Cheltenham Shields‚ John Stephen Bach (2005). Managing human resources: personnel management in transition. Singh‚ K. (2004). Impact of HR Practices on Perceived Firm Performance in India‚ Asia Pacific Journal of Human Resources. Spinks‚ N‚ Wells‚ B. and Meche‚ M. (1999)‚ Appraising the appraisals: computerized performance appraisal systems‚ Career Development International‚ Volume 4‚ Number 2. Stone‚ F.
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Course Project: Formal Recommendation Report or Proposal Objectives Given information on a technology or business-related issue presented in a case study‚ evaluate and integrate outside research to create a well-organized and documented formal analytical report or proposal using at least six sources‚ including books‚ articles‚ interviews with subject matter experts‚ and websites or databases‚ and prepare a set of presentation slides to accompany the proposal. ->8- to 10-page Formal Recommendation
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Formal Lab Report Format A properly written formal lab report in CHEM 123L consists of the following sections: Cover Page Give your experiment a good‚ descriptive title Include the date‚ your name‚ ID#‚ TA’s name and partner’s name and section # Introduction and / or Purpose Introduce the background material your reader will need to understand the experiment and all parts of your report. Summarize the underlying theory of the experiment and any equations you will use. Identify the purpose
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Report on Communication at Mirror Image Commissioned by Tama Wilson‚ CEO of Mirror Image ? ? By Business Consultant Executive summary: Mirror Image needs an overhaul in communication between management and workers. After collecting information collected through the CEO and a resent staff survey‚ it is apparent that certain things are restricting good communication. With the help of great pre-existing research this report identifies several major issues. Distrust of management has led to
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TENS 2146 Electric Devices and Measurements Lab 3 Current and Voltage This report was prepared by: L. Wall Fall 2009 Prof. R. Alba-Flores Team Members: J. White‚ L. Wall Conducted on: September 17‚ 2009 Submitted on : September 24‚ 2009 Abstract: In this lab students experimented with light emitting diodes. The student built a basic circuit with two LED’s and resistors in parallel. The results showed that the voltage is the same in parallel. The items that were in series had the
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