ChemMidTerm2

# ChemMidTerm2 - Blackboard Learning System 2:04 PM Your...

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4/4/10 2:04 PM Blackboard Learning System Page 1 of 7 https://learn.uh.edu/webct/urw/lc5122011.tp0/cobaltMainFrame.dowebct View Attempt 1 of 1 Title: Midterm_Exam_2 Started: March 30, 2010 1:08 PM Submitted: March 30, 2010 2:26 PM Time spent: 01:17:32 Total score: 18/20 = 90% Total score adjusted by 0.0 Maximum possible score: 20 Done 1. A certain ideal gas exerts a pressure of 864.1 torr in a vessel with a volume of 576.0 mL. If the volume is reduced to 412.2 mL, what is the resulting pressure (assume no change in temperature)? Student Response Correct Answer A. 417 torr B. 618 torr C. 275 torr D. 1208 torr E. 0.813 atm Score: 1/1 2. What is the effect of the following on the volume of 1 mol of an ideal gas in a balloon? The pressure is reduced by a factor of four (at constant T). Student Response Correct Answer A. Volume of the gas increases by 100% B. Volume of the gas decreases to 25% of its previous value C. Volume of the gas increases by a factor of 4 D. Volume of the gas decreases by a factor of 4 E. None of these Score: 1/1 3. What is the molar mass of the hypothetical gas Y if 0.91 g of it in a 275.0 mL flask exerts a Your location: Home Page Exams Midterm_Exam_2 Assessments View All Submissions View Attempt

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4/4/10 2:04 PM Blackboard Learning System Page 2 of 7 https://learn.uh.edu/webct/urw/lc5122011.tp0/cobaltMainFrame.dowebct pressure of 375 torr at a temperature of 97 o C? Do not type units with your answer. Student Response Correct Answer Answer: 203.7 203.7 Score: 1/1 4. Which of the following gases has the greatest density at a temperature of 30 °C and a pressure of 750 torr?
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