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    Chemistry The Molecular Nature
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    Exam 21: Electrochemistry: Chemical Change and Electrical Work
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    A Current of 250
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A Current of 250

Question 62

Question 62

Multiple Choice

A current of 250. A flows for 24.0 hours at an anode where the reaction occurring is
Mn2+(aq) + 2H2O(l)  MnO2(s) + 4H+(aq) + 2e-
What mass of MnO2 is deposited at this anode?


A) 19.5 kg
B) 12.9 kg
C) 4.87 kg
D) 2.43 kg
E) none of the above

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