Abstract: The purpose of this experiment was to determine the concentration of an unknown amount of copper sulfate using the spectronic 20. Four solutions of different concentrations of H₂O and CuSO₄ were put into the spectronic 20 to observe their absorption of light. Then‚ a graph was created to plot down the measurements. Using the calibration curve of the graph‚ the concentration of the unknown substance was found out to be .12M. Background/Introduction: Beer’s law (which states that
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Medical Experiments of the Holocaust Kaitlin Holocaust in History January 6‚ 2013 Many brutal atrocities were committed during the Holocaust by the Nazi party against anyone they viewed as “unpure”. This included the Jews‚ Gypsies‚ homosexuals‚ Afro-Germans‚ Slavs‚ communists‚ the handicapped‚ and the mentally disabled. These groups were targeted‚ stripped away of their rights and citizenship‚ and then sent to concentration camps. Some of these camps were death camps; created for the sole
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9/26/2014 20 Quotes: The Importance of Planning | ActionCOACH Ormond Rankin ActionCOACH Ormond Rankin HOME ABOUT BUSINESS TIPS QUOTES BCG CONSULTING WEBSITE 20 Quotes: The Importance of Planning Posted by ormondrankin on June 15‚ 2012 · 24 Comments 20 Quotes: The Importance of Planning http://ormondrankin.wordpress.com/2012/06/15/20-quotes-the-importance-of-planning/ 1/7 9/26/2014 20 Quotes: The Importance of Planning | ActionCOACH Ormond Rankin If you don’t think planning is important‚
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EXPERIMENT 1 “HOW DO I LOVE THEE LET ME COUNT THE WAYS...” DETERMINATION OF AVOGADRO’S CONSTANT Techniques Calibration drop counting MSDS available for • • stearic acid‚ CH3(CH2)16COOH cyclohexane‚ C6H12 Principles molar volume molecular structures surface areas and volumes Avogadro’s constant percent error Recommended Advanced Reading Chapter 3 in Petrucci‚ Herring‚ Madura‚ & Bissonnette’s General Chemistry‚10th Ed. Avogadro Constant...1 INTRODUCTION
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Principles of Human Physiology‚ 4e (Stanfield) Chapter 20 The Gastrointestinal System 20.1 Multiple Choice Questions 1) Which of the following is NOT a basic process of the gastrointestinal system? A) digestion B) filtration C) absorption D) secretion E) motility Answer: B Diff: 4 Page Ref: 568 2) Which of the following is the correct order of the layers of the gastrointestinal tract wall‚ from lumen to external surface? A) mucosa submucosa muscularis externa serosa
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• What was the name of‚ location‚ date and time of the group you attended? The name was the 20’s and 30’s small group Hanson KY‚ it was a church on Sunday 2/11/18 it was a new group that was formed of the 20’s small group and the 30’s small group. • Did the group leader seem prepared for the group? Yes the leader was very prepared for the group meeting and seemed to be very knowledgeable of the group and the material he had prepared to present to us. • Did the group leader or members make newcomers
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THE EFFECT OF CHANGE IN pH ON THE ACTIVITY OF ENZYMES Introduction: Enzymes are catalysts that speed up‚ and control chemical reactions within a cell and break down complex molecules into smaller ones. Some of the chemical reactions that take place in the body produce toxic by-products which need to be converted. The liver produces hydrogen peroxide‚ which is extremely poisonous. When the catalase comes in contact with the hydrogen peroxide‚ it is broken down into water and oxygen. Aim:
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The most useful and important invention of the 20 century is the internet. The internet has changed the way people do research‚ take classes‚ and social media along with creating a whole new type of job market‚ which has a huge affect how the population works today. The next three paragraphs will explain how all this is important to human life as we know it. In the 1970’s and 80’s people had to go to the library‚ the bookstore or to the actually place where it happened to attain a good amount
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saw the dawn of the “ roaring 20s”‚ where there was opportunity for everyone. The economy boomed and investors took a chance and making money in the stock market. Americans became a consuming society. The start of prohibition created a wave of illegal clubs called speakeasies‚ that were controlled by organized crime. Although hate groups‚ like the KKK‚ undermined minorities‚ the 20s was the source of booming cities‚ New inventions‚ and tests on roles that made the 20s the best of times. As cities
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Sulfa Drugs: Preparation of Sulfanilamide Introduction The purpose of this experiment is to prepare sulfanilamide from p-Acetamidobenzenesulfonyl chloride. This will be done using reflux‚ vacuum filtration‚ and melting point determination. Experiment Scheme6 Figure 1. Reaction equation.6 A hot water bath was prepared in a fume hood using a 250-mL beaker. 2.5 g of p-acetamidobenzenesulfonyl chloride was placed into a 50 mL Erlenmeyer flask and 11 mL of dilute ammonium hydroxide solution
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