$1.$ A brine solution contains $300$ g of NaCl dissolved in $1$ liter of water. Calculate the molarity of the NaCl solution. $($Molecular weight of NaCl $=58\mathrm{.}44$ g$/$mol$)$

$2.$ During the electrolysis of brine, $1$ mole of NaCl produces $1$ mole of Cl$$ gas. If $2\mathrm{.}24$ liters of Cl$$ gas is produced at STP $($Standard Temperature and Pressure$),$ calculate the number of moles of NaCl electrolyzed. $($Molar volume of gas at STP $=22\mathrm{.}4$ L$/$mol$)$