John M. answered 01/04/18
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H.S. Chemistry, A.P. Chem, Physical Science and College Freshman Chem
It seems to me that the mass of Zn consumed is given: 0.745 g. It's strange to use the word "consumed" when it's being "produced." As for the number of moles of electrons, Zn2+ + 2 e- --> Zn. So, using Faraday's Laws of electrolysis, you can calculate the number of moles of electrons. HOWEVER, you do not state the current (i) and without that the calculation can't be done. And it would be based on the Zn, not the Fe.
If you have the currect, here's how to do it:
Coulombs (C) = current (amps) x time (seconds)
C/F = moles of electrons i.e.: C/96,500 = moles of electrons