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e3_131_f08 - CHE 131 Exam 3 Fall 2008 Multiple Choice 4...

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CHE 131 Exam 3, Fall 2008 Multiple Choice, 4 points each On the Scantron form, bubble in the letter of the one choice that best completes the statement or answers the question. No credit will be given for multiple answers. ____ 1. 142g of O 2 are reacted with excess H 2 to form H 2 O. What volume of H 2 O vapor would be produced at 0ºC and 1 atm? O 2 + 2H 2 Æ 2H 2 O A. 12 L B. 32 L C. 65 L D. 200 L E. 158 L ____ 2. When a liquid is cooled, its vapor pressure will: ____ 3. Which of these will cause the pressure of a gas to increase ? ____ 4. 16g of He gas are added to 32g of N 2 gas. The total pressure is 760 torr. What is the partial pressure in torr of N 2 in the container?
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