calculate the grams of material formed for each of the following reductions assuming that a current of 6.00 amperes is applied for 20 minutes:
a) Zn(OH)2+ 2e- ---> Zn+2OH- Eo= -1.25V
b) MgO2+4H++4e- ----> Mn2+ +2H2O Eo= 1.23 V
c) Ag2O + H2O+ 2e- ----> 2Ag + 2OH- Eo=...
