Derive Equations $9\mathrm{.}6$a and $9\mathrm{.}7$a from your textbook $[$Tenth Edition$],$ which might be

used to convert mass fraction to volume fraction, and vice versa!

$V_{}=\frac{\frac{W_{}}{{}_{}}}{\frac{W_{}}{{}_{}}+\frac{W_{}}{{}_{}}}$

$(9\mathrm{.}6$a$)$

$V_{}=\frac{\frac{W_{}}{{}_{}}}{\frac{W_{}}{{}_{}}+\frac{W_{}}{{}_{}}}$

$(9\mathrm{.}6$b$)$

$W_{}=\frac{V_{}{}_{}}{V_{}{}_{}+V_{}{}_{}}$