Chemistry - Liquid Solution Question with Solution | TestHub

Henry law constant for solubility of methane in benzene at 298K is $4\times 10^5\mathrm{mm}\mathrm{Hg}$. The molality of methane in benzene at 298 K and 780 mm Hg is $\_\_\_\_\_$ $\times 10^{-3}\mathrm{mol}/\mathrm{kg}$. (Assume solute is negligible with respect to solvent)