Exam I - F05

Exam I - F05 - Name_ Student ID Number_ Lab TA Name and...

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Name______________________________________ Student ID Number___________________________ Lab TA Name and Time_________________________ Fall 2005 - Enderle CHEMISTRY 2A 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. (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 1–14. 28 points 15. 10 points 16. 8 points 17-18. 22 points 19. 17 points 20. 9 points 21. 15 points Total Score (109) 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 12. a b c d e 13. a b c d e 14. a b c d e
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Exam I Page 2 of 14 Part I: Multiple Choice, Concepts Circle the correct answer and enter your response on the cover – No partial credit 1. Which of the following cations is least stable (i.e., find the cation listed that is not a common ion)? A. Fe 3+ B. Co 3+ C. Cu 3+ D. Al 3+ E. Cr 3+ 2. Which selection below contains the largest number of oxygen atoms ? A. 1 mol O 2 B. 2 mol CO 2 C. 1 mol H 2 O D. 1 mol SO 3 E. 1 mol of CO 3. The total numbers of neutrons, protons, and electrons in 31 P 3- are: A. 15 neutrons, 31 protons, 15 electrons B. 16 neutrons, 15 protons, 18 electrons C. 31 neutrons, 15 protons, 18 electrons D. 15 neutrons, 16 protons, 12 electrons E. 16 neutrons, 16 protons, 18 electrons
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Exam I Page 3 of 14 4. Copper metal has 2 naturally occurring isotopes: copper-63 (69.17% abundance) and copper-65 (30.83% abundance; isotopic mass 64.93 amu). If the atomic mass of copper is 63.55 amu, what is the isotopic mass of copper-63? A. 64.93 amu
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Exam I - F05 - Name_ Student ID Number_ Lab TA Name and...

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