SP 08 Exam 3

SP 08 Exam 3 - CHM2045 Exam #3 Spring 2008 Form Code A READ...

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CHM2045 Exam #3 Spring 2008 Form Code A READ THESE INSTRUCTIONS COMPLETELY: Please bubble in (with a #2 pencil) your Last Name (left justified, spaces at the end) and your First and Middle initials (in FI and MI, respectively), on the answer sheet provided. Also bubble in your CHM2045 section number (in Section), and UF ID (in ID Number, leave one space at the end, no hyphen). Leave special codes blank and enter the test form code above. Incomplete or incorrect information will result in an unrecoverable loss of score. Read the entire exam and answer the following 25 questions for a total of 250 points in the context and conventions of our lectures. Work alone, do not talk, and do not share anything with anyone around you. Bubble all answers carefully on the answer sheet. Coding accuracy on the answer sheet is entirely the responsibility of the student; Illegible or incorrect marks will not be credited. Please sign the back of the answer sheet and turn it in before the end of the exam period. Late papers will not be collected. Good Luck! Potentially Useful Information may be found on the accompanying Data Sheet Your name on the answer sheet states the assertion: I hereby pledge that I have neither given nor received unauthorized aid during this exam 1. A rigid vessel at constant temperature initially contains 0.500 atm of nitrogen gas and 0.500 atm of hydrogen gas. If these gases react to form ammonia, and the reaction is assumed to go to completion, what is the closest value to the final (total) pressure in the vessel after the reaction has completed? (a) 0.167 atm (b) 0.66 atm (c) 1.00 atm (d) 1.500 atm (e) 2.00 atm 2. A certain gaseous oxide of sulfur has an effusion rate that is 0.707 times the effusion rate of oxygen gas. What is the most likely molecular formula of this oxide? (a) SO (b) SO 2 (c) SO 3 (d) SO 4 (e) S 2 O 3. What is the closest value to the ratio of (the average kinetic energy of He (gas) molecules at 90.0 K) to (the average kinetic energy of Ne (gas) molecules at 270. K)?
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This note was uploaded on 12/29/2011 for the course ECN 212 taught by Professor Nancy during the Spring '07 term at ASU.

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SP 08 Exam 3 - CHM2045 Exam #3 Spring 2008 Form Code A READ...

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