Using values from the table of standard reduction potentials, calculate the cell potential $($in $V)$ of

the following cells.

$($a$)Ni(s)|N{i}^{2+}(aq)||A{g}^{+}(aq)|Ag(s)$

$($b$)Cd(s)|C{d}^{2+}(aq)||N{i}^{2+}(aq)|Ni(s)$

$($c$)Cd(s),CdS(s)|S^{2-}(aq)||S{n}^{2+}(aq)|Sn(s)$