Quiz 2.Form A.YellowVersion.2010

Quiz 2.Form A.YellowVersion.2010 - Quiz 2 INSTRUCTIONS:...

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Quiz 2 Test Form A Feb. 12, 2010 INSTRUCTIONS: Bubble in Form A on your Scantron Form Write your perm number and bubble in your perm number (7 digits only, no extra numbers). Completely fill bubbles / answers There are six questions . Points for each question are indicated. You may work out the problems and write your answers on this quiz. Turn in the Scantron form only . Keep the quiz so you can check your work and your answers later. The answers to the quiz will be posted on our course web page. ANSWERS are given at the end of the quiz 1. (3 pts) When a gas is cooled at constant volume from an initial temperature of 50 o C to 25 o C it loses 80 J of heat. When the same gas is cooled from 50 o C to 25 o C at constant pressure, it loses 120 J of heat. What is the value of the internal energy change, E, when the gas is heated from 25 o C to 50 o C at constant pressure? A) – 120 J B) + 120 J C) + 80 J D) – 80 J E) – 40 J 2. (4 pts) The heat combustion of ethane, C 2 H 6 ( g ), at 25 °C, is –1559 kJ/mol. Given the following enthalpies of
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This note was uploaded on 03/20/2010 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Quiz 2.Form A.YellowVersion.2010 - Quiz 2 INSTRUCTIONS:...

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