Calculate the maximum possible electrical work that can be obtained from a galvanic cell under…

Calculate the maximum possible electrical work that can be obtained from a galvanic cell under standard conditions at $298\text{ K}$. $\text{Zn} \mid \text{Zn}^{2+}_{(\text{aq})} \parallel \text{Ag}^+_{(\text{aq})} \mid \text{Ag}$ Given $E^\circ_{(\text{Zn}^{2+}/\text{Zn})} = -0\cdot76\text{ V} \text{ ; } E^\circ_{(\text{Ag}^+/\text{Ag})} = +0\cdot80\text{ V}$