The freezing point of pure benzene is \(5.44^{\circ} \mathrm{C}\) and that of the solution containing \(2.092 \mathrm{~g}\) of benzaldehyde in \(100 \mathrm{~g}\) of benzene is \(4.44^{\circ} \mathrm{C}\). Calculate the molecular weight of benzaldehyde when \(K_{\mathrm{f}}\) for benzene is 5.1 .