LECTERUR : EXPERIMENT 4 DETERMINING MOLECULE WEIGHT BY FREEZING POINT DEPRESSION METHOD STUDENT NAME : ID : LAB PARTNERS | | INTRODUCTION According to Anne‚ n.d‚ the freezing point of a liquid is decreased by adding to another compound to it. This is known as freezing point depression. The pure solvent will have higher freezing point than the solution. Colligative property of matter can explain more about freezing point depression. Whereas‚ colligative properties depends on the number
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Experiment 3 Colligative Properties Freezing-Point Depression and Molar Mass By‚ Andrew Klingsporn Joby J. Chem 212 Dr. Chandana Meegoda 2/11/2009 Purpose The purpose of this experiment is to determine the Molar Mass of an unknown substance using its freezing point depression. Introduction There are two types of mixtures; homogenous and heterogeneous. Homogenous mixtures have components that are uniformly mixed‚ while heterogeneous mixtures do not. A solution is a homogenous mixture
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five years or so‚ house prices in the UK have been constantly changing. At times‚ house prices being on a rapid increase and at other times falling. This leads to a possibility of negative house equity. As per Sloman and Garratt: “negative house equity is whereby the outstanding value of a mortgage is greater than the value of property against which it is secured.” (Text Book) Supply and demand are the main determinants of house prices‚ as the equilibrium of house prices will fall if demand rises
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Fourteen Points was a name given to the proposals of President Woodrow Wilson designed to establish the basis for a just and lasting peace following the victory of the Allies in World War 1. The 14 proposals were contained in Wilson’s address to a joint session of the US Congress on January 8‚ 1918. In summary‚ the 14 points were as follows : 1. abolition of secret diplomacy by open covenants 2. freedom of the seas in peace and war‚ except as the seas may be closed in whole or part by international
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Price elasticity of demand (PED) is defined as the responsiveness of the quantity demanded of a good or service to a change in its price. Price Elasticity of Demand Percentage Change in Quantity Demand for product A Percentage Change in Price for Product A So‚ Percentage Change in Quantity Demand for Product A = PED X Percentage Change in Price for Product A Given‚ PED of Books= 2‚ Percentage Change in Price for Books = 10% So‚ Percentage Change in Demand for Books = 2 X 10% = 20%
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Economics HL- IB Price elasticity and indirect taxes Q. Using at least one diagram‚ explain why knowledge of price elasticity of demand is necessary for a government when they are considering increasing indirect taxes on certain products. (16th May 2011‚ Economics- Paper 2(HL)‚ Time Zone 2) The government needs to understand price elasticity of demand when setting the price of the commodities and services it provides for the community (like public transport price). It also needs to be able
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Podmolik‚ Mary Ellen. ‘Area’s median home price up 1.7%: Number of homes sold rises 22% from year earlier’‚ Chicago Tribune‚ 20 July 2012. The price elasticity of demand in Chicago real estate market The newsletter reported the important data of Chicago real estate market in June 2012. Generally speaking‚ this market was experiencing great ascending trends during the short term before the data was released. The specific data is summarized in the following graphics. The market of Chicago real
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Woodrow Wilson’s decision to give his Fourteens Points speech contributed to the end of World War I‚ was the basis for many peace treaties and paved the road for future nations and alliances. "Covenants of peace be quickly arrived at so that this war can end and future nations can begin." These are some of the words of Woodrow Wilson said when he delivered the powerful Fourteen Points speech at the joint session of Congress and many other important meetings including the Paris Peace Conference
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The Changing Price Elasticity of Demand for Domestic Airline Travel Consumers make economic decisions as to what they buy based largely on price. More specifically‚ the change in the amount of a good purchased is often highly dependent on its change in price. That measure of responsiveness is defined as the price elasticity of demand. Mathematically‚ it is often expressed as: Ed = - percent change in quantity demanded / percent change in price‚ or -(dQ/Q)/(dP/P). The minus sign is often
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the material price variance and usage variances for the month. 2. Calculate the labor rate and efficiency variances for the month. 3. How would your answers to Questions 1 and 2 change if you had been told that November’s planned production activity was 4‚000 units of A and 4‚000 units of B? 4. How would your answers to question 1 and 2 change if you had been told that November’s sales were 4‚000 units of A and 3‚500 units of B? SOLUTIONS: 1. (a.) MATERIAL PRICE AND (b.) USAGE
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