Calculate the freezing point of a solution made from $32\mathrm{.}7g$ of propane, $C_3{H}_8,$ dissolved

in $137\mathrm{.}0g$ of benzene, $C_6{H}_6.$ The freezing point of benzene is $5\mathrm{.}50C$ and its $K_f$ is $5\mathrm{.}12$

$\frac{C}{m}.$

$T(f)=k_f*m$

$n=$ molality $k_f=$ freezing point