Thermochemistry Laboratory Report Abstract The purposes of these three experiments are to determine the heat capacity of a calorimeter and with that data‚ confirm Hess’s Law and observe enthalpy changes within reactions. By measuring the change in temperature that occurs with the interaction of two different reactants‚ we were able to determine both the calorimeter constant and the change in enthalpy of a given reaction. The results were rather mixed‚ as some numbers more closely resembled the
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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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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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How to Write Complaint Letters Introduction Letters of complaint usually include the following stages: 1. Background 2. Problem - cause and effect 3. Solution 4. Warning (optional) 5. Closing 1. Background This section describes the situation; e.g. I am writing to inform you that the goods we ordered from your company have not been supplied correctly. I attended your exhibition Sound Systems 2014 at the Fortune Hotel (22-25 January) and found it informative and interesting. Unfortunately
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Input control There are different actions needed before the execution of the marketing plan. Financially‚ more funds are needed for advertising MIXY to increase awareness‚ new product development‚ and better colors for the packaging. MIXY is not advertised and it needs to be in a larger product line to compete better. Also‚ as the packaging is made by the same supplier as CL‚ it should differ to be easily recognized. More expenditure is also needed for the R&D as the company is strong in
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Angela Campoli ENG 4U1 Ms. Simon Father Leo J. Austin CSS Nov. 19‚ 2014 The Loss of Humanity in 1984 Every human being holds an intrinsic set of natural behaviours which ultimately affect how they perceive their surroundings. For the majority‚ these behaviours come naturally so they have no control over them‚ unless they are negatively influenced to do otherwise. In George Orwell’s dystopic novel 1984‚ the citizens of Oceania are unfortunately controlled by the Party in every way possible. The
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Tarnas 1 Kulananalu Tarnas Professor Kirk Organic Chemistry Lab 8 March 2014 Project 4: Interconversion of 4-tert-butylcyclohexanol and 4-tert-butylcyclohexanone Intro: It is truly incredible how the smallest differences between molecules can lead them to react and behave entirely differently. These differences are perhaps most highlighted in the medical field where stereochemistry of a molecule can be the difference between having a medically active‚ effective drug and a toxic‚ potentially
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1. Trade and specialization (Chapter 3) a) Country A Resources devoted to clothing Output of clothing Resources devoted to food Output of food 100% 28 0% 0 80% 25 20% 4 60% 17 40% 11 40% 12 60% 15 20% 7 80% 18 0% 0 100% 21 i. Production Possibility Frontier of Country A ii. When the production of food is increasing‚ the opportunity of food in terms of clothing is negative; this is because the opportunity cost of clothing is larger than the opportunity of cost of food.
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Introduction: The purpose of the first experiment was to practice obtaining accurate and precise results by doing combustion analysis to find the amount of carbon dioxide and water released and the amount of fuel consumed. To identify the amount of carbon dioxide‚ water and burner consumed there were three equations used to find it. Equation 1 shows how much carbon dioxide was released. Mass of carbon dioxide = m2 - m1 Equation 1 was used as an experimental procedure created to help find out
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Duyen Nguyen Eng1D- Ms.Rizvi Research Paper Date: 12/04/12 The Importance of Early Formal Education Early formal education refers to the education that children obtain during early stages of their childhood. Early childhood is a crucial time period for the development of the mental functions of children. This development‚ including the emergence of the abilities and skills in areas such as language‚ motor skills‚ psychosocial cognitive‚ and learning‚ is now known to be greatly influenced by
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