Use the standard half-cell potentials listed below to calculate the standard cell potential for the following reaction occurring in an electrochemical cell at 25C. (T equation is balanced) Mg(s) + Cu2+(aq) - Cu(s) + Mg2+(aq) Mg2+(aq) + 2 e- - Mg(s) EO = - 2.38 v Cuz+ (aq) + 2 e- - Cu(s) E. = +0.34 v