A galvanic cell is based on the following half-reactions at 25°C: Ag+(aq) + e + Ag(s) E° = +0.80 V H2O2(aq) + 2 H+(aq) + 2 e + 2 H2O(1) E° = +1.77 V Calculate Ecell for this galvanic cell when [Ag+]=2.0 M, [H2O2] = 1.0 M, and pH=7.