NaCl aerosol exists in the aerosol phase at a concentration of $10u\frac{g}{m}3.$ A cloud forms with a high

water content $(L=0\mathrm{.}9gH2\frac{O}{m}3$ air$)$ and the cloud fully dissolves the NaCl.

$($a$)$ What will the molar ratio of $Na+$ to $Cl-$ in the cloud water be$?$

$($b$)$ What is the Na$+$ concentration in umole$/$liter$?$