You are given a $1\mathrm{.}50g$ mixture of sodium nitrate and sodium chloride. You dissolve this mixture into $100mL$ of water and then add an excess of $0\mathrm{.}500M$ silver nitrate solution. You produce a white solid, which you then collect, dry, and measure. The white solid has a mass of $0\mathrm{.}641g.$

a$.$ If you had an extremely magnified view of the solution $($to the atomic$-$molecular level$),$ list the species you would see $($include charges, if any$).$

b$.$ Write the balanced net ionic equation for the reaction that produces the solid. Include phases and charges.

c$.$ Calculate the mass percent of sodium chloride in the original unknown mixture.