write half reaction for KMnO4 and (COMM)2 and balance the equation.calculate the atomic mass of M in14.0g/dm3 of solution

1 answer

The half reaction for KMnO4 is
MnO4^- + 8H^+ + 5e ==> Mn^2+ + 4H2O
I have no idea what (COMM)2 is
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