$35wt\%$ solution of ethanol in water is prepared by adding $35\mathrm{.}0g$ of $C{H}_{3}C{H}_{2}OH$ to of $H_{2}O$ at $20C.$

a$.$ Using SG$\text{'}$s $($Specific Gravities$)$ from Table Bl of the course textbook, estimate the volumes of ethanol and water that are blended and estimate the density of the $35wt\%$ solution, assuming volume additivity.

b$.$ Perry's Handbook lists the density for a $35wt\%$ solution of ethanol in water at $20C$ as $0\mathrm{.}94494\frac{g}{c}{m}^3.$ Determine the total volume of the solution, as prepared above, using the density from Perry's.