FinalBKey - CHEM 142D Final Exam 2009 December 14 @6:30 PM...

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CHEM 142D Final Exam 2009 December 14 @6:30 PM Page 1 You must mark version B on side 1 of the Answer Sheet. Chemistry 142D Multiple Choice Final Exam (a) Before starting, make sure your exam has 9 pages, including the periodic table. (b) To receive credit you must be sitting in your assigned seat or discuss a move with your TA. (b) Fill in your name, section, and student number on Side 1 of the Answer Sheet . (c) To receive credit, you must mark Test Version B on Side 1 of the answer sheet. (d) When you are done with the exam, hand the Answer Sheet to a TA. (e) The exam is over at8:20 PM. No answer sheet will be accepted after 8:25 PM. (e) Avogadro’s number, Gas Constant and pressure units: 23 6.022 10 0.08206 11 1 7 6 0 1 0 1 . 31 4 . 7 02 7 3 . 1 5 A Atm NR mol K torr mm Hg Atm mm Hg kPa psi CK ± ² ± q A
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CHEM 142D Final Exam 2009 December 14 @6:30 PM Page 2 You must mark version B on side 1 of the Answer Sheet. 1) (5 pts) Which column in the periodic table contains the alkaline earth elements ±² ±² ± ² The column that has Fluorine at the top The column that has Boron at the top. The first column on the left The last column on the far right The second column from left to right a b c d e 2) (5 pts) How many electrons are there in the ion 2 S ³ ? 10 18 14 32 34 a b c d e 3) (5 pts) The molecule HClO is called Chlorous acid ChlorineHydroxide Hypochloric acid hypochlorous acid chloric acid a b c d e 4) (5 pts) Predict the formula for the compound made from Ca and N 32 3 2 23 aC a N bC a N cC a N dC a N eC a N
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CHEM 142D Final Exam 2009 December 14 @6:30 PM Page 3 You must mark version B on side 1 of the Answer Sheet. 5) (10 pts) Balance the following reaction in acidic solution. ±² ± ² ± ² ± ² 2 42 __ __ __ __ B ra q M n Oa q B rl M n a q ³³ ´o ´ ´ What is the stoichiometric coefficient of ? 2 HO 0 4 5 8 15 a b c d e 6) (5 pts) In the following reaction, what is the oxidizing agent? ± ² ± ² ± ² 2 __ __ __ __ Br aq MnO aq Br l Mn aq ´ ´ 3 2 4 2 2 ) ) ) ) ) aB r a q bH a q cM n O a q dB r l eM n a q ³ ´ ³ ´ 7) (10 pts) Uranium naturally occurs primarily in two isotopic forms. The major common isotope is 238 U (atomic mass 238.01 amu), which cannot sustain fission.
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FinalBKey - CHEM 142D Final Exam 2009 December 14 @6:30 PM...

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