For the remaining questions, assume that you start with $0\mathrm{.}562(g{)}_{?}$ of copper turnings:

Calculate the initial number of moles of $Cu.$

$8\mathrm{.}84{10}^{-3}$mol

Calculate the minimum volume of $16\mathrm{.}0MHN{O}_3$ required to dissolve all of the copper $($step $1).$

$2\mathrm{.}21mL$

If$,$ in practice, $5\mathrm{.}0mL$ of $16\mathrm{.}0M$ nitric acid were added to effect the dissolution of the copper $($step $1),$ what would be the minimum volume of $4\mathrm{.}00$MNaOH required to neutralize the remaining acid and convert all of the $C{u}^{2+}(aq)$ to step $2$

THE PREVIOUS ANSWER PROVIDED BY THE EXPERT WAS WRONG IT IS NOT $5\mathrm{.}57$ML