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PracExam II F06 KEY

PracExam II F06 KEY - Name Student ID Number Lab TA Name...

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Name______________________________________ Student ID Number___________________________ Lab TA Name and Time_______________________ Dr. Bryan Enderle Fall 2006 CHEMISTRY 2C (Section B) "#$% && Instructions: ’()*"+ ,))- "./0 1 No books, notes, or additional scrap paper are permitted. All information required is contained on the exam. Place all work in the space provided. Thank you for reading the instructions. 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) If you finish early, RECHECK YOUR ANSWERS! U.C. Davis is an Honor Institution 23445678 2359:4 2359:4 1–10. 30 points 11. 9 points 12-14. 19 points 15-16. 13 points 17. 12 points 18. 20 points ;3:$7 *<3=8 >[email protected] 0C7:5D78 ’E35<8 (circle one) 1. a b c d e 2. a b c d e 3. a b c d e 4. a b c d e 5. a b c d e 6. a b c d e 7. a b c d e 8. a b c d e 9. a b c d e 10. a b c d e
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Exam II Page 2 of 12 2$=: &F 0C7:5D78 ’E35<8G ’39<8D:4 ’5=<78 :E8 <3==8<: $94H8= $9I 89:8= J3C= =84D3948 39 :E8 <3K8= L M3 D$=:5$7 <=8I5: 1. As a semimetal, tellurium acts as a metal and a nonmetal. Determine the common charge(s) of tellurium. Hint: consider the inert pair effect. A. +6 B. +4 C. -2 D. all of the above E. none of the above 2. In order to increase the rate of reaction, one could 3. From your text: Use a value of k = 7.30 x 10 -4 / s for the first order decomposition of H 2 O 2 (aq) to determine the percent H 2 O 2 that has decomposed in the first 500.0 s after the reaction begins.
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