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how do you figure out the number of mol of electrons transfered in
3Co+2 +2Cr-->2Cr+3 +3Co
when
Cr+3 + 3e--->Cr
Co+2 +2e-->Co
3Co+2 +2Cr-->2Cr+3 +3Co
when
Cr+3 + 3e--->Cr
Co+2 +2e-->Co