$\text{ The boiling point of a solution of }0.11\mathrm{g}\text{ of a substance in }15\mathrm{g}\text{ of ether was found to be }0{.1}^{\circ }\mathrm{C}\text{ higher than that of pure ether. The molecular weight of the}$
$\mathrm{substance} \mathrm{wil}l \mathrm{be} \left({\mathrm{K}}_{\mathrm{b}}=2{.16}^{\circ }{\mathrm{Kkgmol}}^{-1}\right)$