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Unformatted text preview: Name______________________________________________ Student ID Number___________________________________ LAB Sec. # ___; TA: __________; Lab day/time: __________ Dr. Bryan Enderle Spring 2006 CHEMISTRY 2B (Section D) Exam I Instructions: CLOSED BOOK EXAM ! No books, notes, or additional scrap paper are permitted. All information required is contained on the exam. Place all work in the space provided. If you require additional space, use the back of the exam. A scientific calculator may be used (if it is a programmable calculator, its memory must be cleared before the exam). (1) Read each question carefully. (2) For Parts I and II , there is no partial credit given and only answers marked on this cover page will be graded . (3) The last page contains a periodic table and some useful information. You may remove it for easy access. (4) If you finish early, RECHECK YOUR ANSWERS! U.C. Davis is an Honor Institution Possible Points Points #1–12. (3 points each) / 33 #13-18. (6 points each) / 36 #19-20. (16 points) / 16 #21. (18 points) / 18 #22. (14 points) / 14 Total Score (117) / 117 Multiple Choice (circle one) 1. a b c d e 2. a b c d e 3. a b c d e 4. a b c d e 5. a b c d e 6. a b c d e 7. a b c d e 8. a b c d e 9. a b c d e 10. a b c d e 11. a b c d e 1-11 total pts: 12. a b c d e Bonus Question: 1 pt: 13. a b c d e 14. a b c d e 15. a b c d e 16. a b c d e 17. a b c d e 18. a b c d e 13-18 total pts: Name: ____________________________________ Exam I (Page 2 of 12) Part I: Multiple Choice, Concepts (3 points each) Select the best answer and enter your choice on the cover sheet – No partial credit 1. (3 pts) The vapor pressure of a solution changes as (a) The temperature changes. (b) The size of the container increases. (c) The size of the container decreases. (d) The amount solution increases. (e) Atmospheric pressure changes. 2. (3 pts) Which of the following can be approximated as a closed system? (a) A coffee-cup calorimeter. (b) A system where only mass can cross the boundary. (c) A bomb calorimeter. (d) A bottle with the cap on it. (e) A human being. 3. (3 pts) Work is a negative value when (a) A gas is given off during a chemical reaction. (b) Work is done on the system. (c) A gas compresses. (d) All of the above. (e) None of the above. 4. (3 pts) Which of the following packing structures has the lowest density (i.e., the unit cell having the least amount of atoms)?...
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- Spring '07
- Chemistry, Vapor pressure, pts, Cubic crystal system