Enthalpy of sublimation of iodine is 24 cal g^-1 at 200^° C. If specific heat of I_2( s ) and I_2 (vap) are 0.055 and 0.031 cal g^-1 K^-1…

Enthalpy of sublimation of iodine is $\displaystyle 24 \mathrm{cal} \mathrm{g}^{-1}$ at $\displaystyle 200^{\circ} \mathrm{C}$. If specific heat of $\displaystyle \mathrm{I}_2(\mathrm{~s})$ and $\displaystyle \mathrm{I}_2$ (vap) are $\displaystyle 0.055$ and $\displaystyle 0.031 \mathrm{cal} \mathrm{g}^{-1} \mathrm{~K}^{-1}$ respectively, then enthalpy of sublimation of iodine at $\displaystyle 250^{\circ} \mathrm{C}$ in $\displaystyle \mathrm{cal} \mathrm{g}^{-1}$ is :