Aim: To determine the effect of altering concentration (mol dm-3) of hydrochloric acid (HCl) on the rate of reaction (mol dm-3 s-1) for the following chemical reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Research question: How does altering concentration (mol dm-3) of hydrochloric acid (HCl) affect the rate of reaction (g/s) for the following reaction: CaCO3(s) + HCl(aq) CaCl2(s) + H2O(l) + CO2(g) Background information: The reaction between calcium carbonate and hydrochloric acid
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The Rate Of Photosynthesis: Lab report 1) Construct a graph of your data 2) Using the graph‚ estimate the time at which 50 percent of the leaf disks were floating on the surface. The point at which 50 percent of the leaf disks are floating will be you point of reference for future investigations Using the graph the estimated time that roughly 50% of the leaf disks were floating on the surface was around the 10th minute. At the 10th minute our number rose up to
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Speaking The Cost Of Living In the early nineteen seventies the cost living was affordable for the American families‚ As a child I remembered my mother sending me to Pete’s Confection Store‚ I would put to the items in my little red wagon and bring them home for my mother. The items that I’d shop for were eggs‚ a loaf of bread‚ milk‚ and a six pack of seven-up sodas. There is a major difference in the price of these items then compared to now‚ a carton of eggs use to cost $.25 cents per carton
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experiment is to determine the rate law and the activation energy for the reaction between persulfate ion‚ S2O82-‚ and iodide ion‚ I-: S2O82-(aq) + 2 I-(aq) 2 SO42-(aq) + I2(aq) The rate law can be written as Reaction rate = (1) Where m and n are the orders with respect to S2O82- and I-‚ respectively‚ and k is the rate constant. Determining the rate law involves determining the values of m and n. The temperature dependence of the rate constant is given by (2)
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FINAN 6121 – Corporate Finance Cost of Capital – The Walt Disney Company Team Titans B (Doug Horne‚ Shaun Hoggan‚ James Thackeray‚ Jeff Burg) The purpose of this project is to determine the weighted-average cost of capital (WACC) for The Walt Disney Company. According to The Walt Disney Company’s Form 10-K filing for the fiscal year ended September 29‚ 2012‚ “The Walt Disney Company‚ together with its subsidiaries‚ is a diversified worldwide entertainment company with operations in five business
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Cost Scenario University of Phoenix ECO 561PR October 22‚ 2012 Professor Adelaida Torres Dilan Cost Scenario The San Juan Cell Phones Scenario Summary talk about this company that manufacture cell phones where Maria Perez‚ a business development specialist‚ secured an order of 100‚000 units with this major chain‚ which is an opportunity to the company to increase their production and their profit. Cell phones are very important to the community these days for business
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this essay I will compare and contrast the different legislative agendas of various interest groups involved with the Texas Government. An interest group (also called an advocacy group‚ lobbying group‚ pressure group‚ or special interest) is a collection of members that are determined to encourage or prevent changes in public policy without trying to be elected. The essay will discuss the four kinds of interest groups‚ trade‚ professional‚ single and public‚ as well as provide one detailed example
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American Obesity Rises The obesity rate in America has increased tremendously within the past 20 plus years. People have become more comfortable being heavier than the average. Society tries to enforce the idea of “slim” being “in”‚ while somehow contradicting itself by saying being comfortable in your own skin. The obesity rate in America has increased because of cultural changes‚ lifestyle habits‚ and genetics. Over the past 20 years‚ American culture has changed as a whole. Working men and
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The purpose of this practical is to investigate how the pulse rate of humans changes when they exercise. Someone who is physically fit can supply their muscles with enough blood‚ carrying glucose and oxygen‚ for an activity at a lower heart and breathing rate. The fitter you are the lower your resting heart rate. You and your classmates will be the humans investigated. SAFETY: If you know you have any condition that affects you doing exercise‚ please make sure your teacher knows before you start
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The Australian Exchange Rate By: Dontae Smith Introduction: What factors affect the demand and supply of Australian dollars in the foreign exchange markets? Distinguish between the possible causes and effects of currency depreciation and a currency appreciation on the Australian economy. What forces have come into play‚ if any‚ in the past four months that have affected the value of the Australian dollar? Exchange Rate: "The rate at which one unit of domestic currency is exchanged for a given
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