A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is Zn2+ + 2e- . Zn (s) E° = -0.763 V The concentrations of zinc ion in the two compartments are 5.50 M and 1.11 × 10-2 M, respectively. The cell emf is __________ V.

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A voltaic cell is constructed with two Zn2+-Zn electrodes, where the half-reaction is Zn2+ + 2e- . Zn (s) E° = -0.763 V The concentrations of zinc ion in the two compartments are 5.50 M and 1.11 × 10<sup>-2</sup> M, respectively. The cell emf is __________ V.