1178564752Xuj - Anderson, Kiel Homework 10 Due: Apr 22...

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Unformatted text preview: Anderson, Kiel Homework 10 Due: Apr 22 2007, midnight Inst: McCord 1 This print-out should have 15 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. The due time is Central time. 001 (part 1 of 1) 10 points What takes place at the negatively charged terminal of a voltaic cell? 1. oxidation correct 2. combustion 3. the net redox reaction 4. reduction Explanation: 002 (part 1 of 1) 10 points An aqueous solution of bismuth nitrate (Bi(NO 3 ) 3 ) was electrolyzed until 23 grams of metallic bismuth was plated out at the cath- ode. How many Faradays of electricity must have passed through the cell? Correct answer: 0 . 330174 . Explanation: 003 (part 1 of 1) 10 points What current is required to produce 91.6 g of chromium metal from chromium(VI) oxide in 12.4 hours? 1. 16.3 A 2. 20.1 A 3. 22.8 A correct 4. 15.4 A 5. 18.4 A Explanation: 004 (part 1 of 1) 10 points How many grams of Cu metal (63.55 g/mol) will be plated out of a Cu(NO 3 ) 2 solution by passing a current of 3.00 amperes for 11 minutes? (1 Faraday = 96,485 Coulombs) 1. 0.652 g correct 2. 2.608 g 3. 0.0721 g 4. No other answer is within 2 percent....
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1178564752Xuj - Anderson, Kiel Homework 10 Due: Apr 22...

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