To calculate the cell potential, we first need to determine the half-reactions for the redox reaction. In this case, we have:Mg s Mg aq + 2e oxidation half-reaction Cu aq + 2e Cu s reduction half-reaction Next, we need to find the standard cell potential E for the reaction. We can do this by subtracting the standard potential of the oxidation half-reaction from the standard potential of the reduction half-reaction:E cell = E reduction - E oxidation Since the reduction of Mg has a standard potential of -2.37 V and the reduction of Cu has a standard potential of +0.34 V, we can rewrite the equation as:E cell = +0.34 V - -2.37 V E cell = +0.34 V + 2.37 V = +2.71 VNow that we have the standard cell potential, we can determine if the reaction will proceed spontaneously or not. A positive cell potential indicates that the reaction will proceed spontaneously, while a negative cell potential indicates that the reaction will not proceed spontaneously.Since the cell potential is +2.71 V, which is positive, the reaction will proceed spontaneously.