Calculate quantity of charge and maximum work from a battery.

The discharge reaction for a zinc$-$manganese dioxide battery can be represented as:

$Zn(s)+2Mn{O}_2(s)longrightarrowZnO(s)+2M{n}_2{O}_3(s)$

$($a$)$ What quantity of charge $($in coulombs$)$ can be provided by a fully charged $1\mathrm{.}50-V$ zinc$-$manganese dioxide photo$-$flash battery, if the mass of $Mn{O}_2$ in the battery is $7\mathrm{.}35g?$

$($b$)$ What is the maximum amount of work $($in joules$)$ that can be obtained from this battery?