Exam I - W08

Exam I - W08 - Name Student ID Number Lab TA Name and Time...

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Name______________________________________ Student ID Number___________________________ Lab TA Name and Time_______________________ Winter 2008 - Enderle CHEMISTRY 2A Exam I Multiple Choice (circle one) 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. (1) Read each question carefully. (2) There is no partial credit for the problems in Part I and Part II. (3) The last page contains a periodic table and some useful information. You may remove this for easy access. (4) Graded exams will be returned in the discussion sections next week. (5) If you finish early, RECHECK YOUR ANSWERS! U.C. Davis is an Honor Institution Possible Points Points 1–16. 48 points 17–18. 9 points 19–20. 11 points 21–22. 12 points 23. 13 points 24. 6 points 25. 4 points Total Score (103) 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 12. A B C D E 13. A B C D E 14. A B C D E 15. A B C D E 16. A B C D E
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Exam I Page 2 of 11 Part I: Multiple Choice, Concepts Circle the correct answer here and on the cover – No partial credit (3 points each) 1. What is the sum of the coefficients when the following equation is balanced? H 2 SO 3 + Al(OH) 3 b Al 2 (SO 3 ) 3 + H 2 O A. 4 B. 5 C. 11 D. 12 E. 14 2. Which of the following elements could have 67 electrons, 106 neutrons, and 70 protons? A. Sg B. Ho C. Pd D. Yb E. Ga 3. A mole of air is approximately what volume? A. 0.2 L B. 2 L C. 22 L D. 222 L E. 2222 L 4. How many significant figures are in 00.0001030300? A. 3 B. 5 C. 7 D. 12 E. 15 5. A hypothetical element Z has two stable isotopes: Z-46 = 45.981 u; 24.32% Z-38 = 38.012 u; 75.68% The element’s atomic mass would be closest to which of these elements? A. K
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Exam I - W08 - Name Student ID Number Lab TA Name and Time...

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