$($a$)$ the composition of the liquid and solid phases in both mol$\%$ and $wt\%$

$($i$)$

mol$\%$MgO of liquid $\%$

mol$\%$MgO of solid

wt$\%$ MgO of liquid

$\%$

wt$\%$ MgO of solid

$\%$

$\%$

$($b$)$ the amount of each phase in mol$\%$ and wt$\%$

mol$\%$ in liquid phase

mol$\%$ in solid phase

$wt\%$ in liquid phase

wt$\%$ in solid phase

$($c$)$ Assuming that the density of the solid is $6\mathrm{.}32\frac{g}{c}{m}^3$ and that of the liquid is $7\mathrm{.}14\frac{g}{c}{m}^3,$ determine the amount of each phase in vol$\%.$

vol$\%$ in liquid phase

$\%$

vol$\%$ in solid phase

$\%$