$1.3$Cu$($s$)+8$HNO$3($aq$)->3$Cu$($NO$3)($aq$)+2$NO$($g$)+4$H$2$O$($l$)$

If a copper penny contains $3\mathrm{.}10$g of copper, what volume of $8\mathrm{.}00$mol$/$L nitric acid is required to exactly consume it$?$ What volume of nitrogen monoxide gas measured at STP would be produced?

$2.$ AgNO$3($aq$)+$NaCl$($aq$)->$NaNO$3($aq$)+$AgCl$($s$)$

What volume of $0\mathrm{.}500$mol$/$L silver nitrate would be required to precipitate all of the chloride ions in $40\mathrm{.}00$mL of a salt solution that contains $2\mathrm{.}93$g of NaCl$($aq$)$ per litre of solution?