galvanic cell sketched below is powered by the following reaction: Zn(s)+pdso4(aq) → ZnSO4(aq)+Pd(s) e- E1 E2 S1 S2 Write a balanced equation for the half-reaction that happens at the cathode of this cell. Write a balanced equation for the half-reaction that happens at the anode of this cell 鹊 Of what substance is E1 made?