How long would it take (in seconds) to replace all of the hydrogen gas in a fuel cell that can accommodate 4.8 kg of hydrogen (H2). If the current supplied to the cell is 10,000 A?
½ O2 + 2H+ + 2e- → H2O E0 = +1.23 V
2 H+ + 2 e- → H2 E0 = 0.00 V
F = 96,500 C/mol
Time =654 seconds
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