Objective: Find the standard molar enthalpy of combustion for magnesium. Manipulated Variables- volume of HCl‚ length of magnesium strip‚ mass of magnesium oxide‚ Controlled Variable- type of calorimeter (Styrofoam cup) Responding Variable- change in temperature Procedure: 1. Cut out 3 pieces of magnesium strips each with lengths of maximum 5 centimeters. 2. Measure and record the lengths of the magnesium. 3. Scrub the magnesium strips with steel wool to clean out impurities. 4. Pour
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ANTACIDS- Classification and Mechanism of Action INTRODUCTION Antacids are defined as a substance‚ generally a base‚ which counteracts stomach acidity. The name antacid means anti-acid (against acid). Antacids are the primary treatment for ailments such as gastric reflux‚ gastritis‚ upset stomach and heartburn. Hydrochloric acid is secreted by the stomach to kill harmful organisms‚ aid digestion and activate digestive enzymes. Excess secretion of acid into stomach or impaired resistance by
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1. Select a sweetener: Ace K I chose this particular sweetener because I have never heard of it until now and it sparked my interest. 2. Explore the history of the sweetener (when it was developed‚ its composition). Ace K is short for Acesulfame Potassium‚ or sometimes just Acesulfame K. It is also often called by the names: Sunett‚ Sweet One‚ and Sweet ’n Safe. Ace K was discovered by Hoechst scientists in Frankfurt‚ Germany‚ in 1967. It is a calorie-free sweetener that is used and approved
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1. a) Democritus reasoned that if matter could be infinitely divided‚ it was also subject to complete disintegration from which it can never be put back together. However‚ matter can be reintegrated. b) In Greek‚ the prefix "a" means "not" and the word "tomos" means cut. Our word atom therefore comes from atomos‚ a Greek word meaning uncuttable. All matter is composed of atoms‚ which are bits of matter too small to be seen. These atoms CANNOT be further split into smaller portions. 2. At
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The Development of the Atomic Theory Have you ever wondered how the atomic theory came to be? Or have you have wondered who it was that helped in its development? There was not just one man who came up with the atomic theory‚ but there were many scientists that contributed to its development. One of these scientists was Democritus‚ a Greek philosopher. Democritus was the son of Hegesistratus‚ and he was a student of Magians and Chaldaeans. By some authorities he was thought of as the greatest
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Heat of Combustion of Magnesium Background: The students were given full instructions on how to experimentally determine the enthalpy of reaction (ΔHrxn) for the combustion of magnesium ribbon‚ using Hess’s Law. Data Collection: | |Reaction 1 |Reaction 2 | | |(MgO) |(Mg)
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Health and Nutrition Week 3 iLab Richard Ratliff Jr 1. Describe the healthy meal that you have created from the fast-food restaurant using the nutritional value of menu items. A. I chose the fast food restaurant McDonald’s. I have ordered a vegetarian premium wrap‚ a side salad‚ and a medium orange juice. Premium Bacon Ranch Salad (Without chicken)- 140 Calories‚ 7g of total fat‚ 300mg of sodium‚ 10g of Carbohydrates‚ 9g of protein‚ and 160 vitamins A. Side Salad- 20 Calories
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Subnetting IP Address‚ Configuring Static Routes and Static Host Table vLab (15 points) Write a paragraph (minimum five college-level sentences) below that summarizes what was accomplished in this lab‚ what you learned by performing it‚ how it relates to this week’s TCO’s and other course material; and just as important‚ how you feel it will benefit you in your academic and professional career. (7 points) This was more challenging than normal‚ due to I was unable to get the proper results in the
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------------------------------------------------- Name: Date: Professor: ------------------------------------------------- Converting Decimal to Binary and Binary to Decimal (20 points) Instructions for the Binary Conversion Exercise: NOTE!!: YOU DO NOT HAVE TO CLICK ON THE DIAGRAM TO START THE LAB. The diagram displayed during the experiment is not used. The only buttons that you need to be concerned about are the “Suggested Approach” and the “Sample Solution”. Write
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Laboratory Report Cover Sheet DeVry University College of Engineering and Information Sciences Course Number: CEIS100 Professor: Laboratory Number: Laboratory Title: Get the Raspberry PI up and running and explore the desktop. Submittal Date: Objectives: (What was the purpose of this lab? What did you expect to find?) The purpose of this lab was to explore the Raspberry PI and get to know the contents of this small computer. Results: (What did you find?) I found out this small computer
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