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Mg(s) | Mg2+(aq)Au+(aq) | Au(s)
This forms a galvanic (voltaic) cell (battery).
AL(s) AL3+(aq) ll Zn2+(aq) ll Zn(s)
Ni(s) | Ni2+(aq) Ag+(aq) | Ag(s)
Yes
Zn(s)/Zn2+(aq)//Au+(aq)/Au(s)
Mg(s) | Mg2+(aq)Au+(aq) | Au(s)
Al | Al^3+ Zn^2+ | Zn
Al(s) | Al3+(aq) Ni2+(aq) | Ni(s)
Zn(s)/Zn2+(aq)//Au+(aq)/Au(s)
Mg(s) | Mg2+(aq) Au+(aq) | Au(s)
Mg(s) | Mg2+(aq)Au+(aq) | Au(s)
Mg(s) | Mg2+(aq) Au+(aq) | Au(s)
Al(s) I AI3+(aq) II AI3+ (aq) I Al(s)
Type your answer here... Al(s) | Al3+(aq) Mg2+ (aq) | Mg(s)
Zn(s)/Zn2+(aq)//Au+(aq)/Au(s)
Zn(s)/Zn2+(aq)//Au+(aq)/Au(s)