A $0\mathrm{.}750g$ sample of impure sodium chloride is dissolved in $100mL$ water, and the solution is filtered. The chloride in the solution is then precipitated by the addition of excess silver nitrate, and $1\mathrm{.}000g$ of silver chloride solid was formed.

What is the mass of chlorine in the original sample?

What is the mass of sodium chloride in the original sample? What is the percentage of NaCl in the original sample?