7. A galvanic cell at 25C consists of an electrode of zinc in a 0.10 M ZnSO4 solution and anther of nickel in a 0.05 M NISO4 solution. The two electrodes are separated by a porous wall and connected by an external wire. What is the emf of the cell when a switch between the two electrodes is just closed? (1 point) Assume that for MMn+ +ne', the Nernst equation can be written as: e=e + (0.059)xlog(molar concentration of ions) e (Zn2+/Zn) = -0.762 V and e (Ni2+/Ni) = -0.250 V