If a constant current of 4.9 amperes is passed through a cell containing Cr3+ for 2.3 hour, how many grams of Cr will plate out onto the cathode? (The atomic mass of Cr is 51.996 g/mol.)
A) 0.12 g
B) 1.1 g
C) 66 g
D) 22 g
E) 7.3 g
Correct Answer:
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