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A galvanice cell uses this half reaction: MnO-(aq) -> Mn2+(aq) in an acidic solution. Knowing that the standard potential Eo for this half reaction is 1.51 V pH 2 and the concentrations are [MnO4-] = 1.0 M and [Mn2+] = 1.0x10^-3 M. Calculate the potential E of this half cell at 25 C.