**Question **# 3. [4 marks] The molar heat capacity (CP.M. (T)) for iron is given by the following Shomate equation, andis valid between 298-700 K, C_{P, m}(T)=\left(18.42+24.64 T-8.914 T^{2}+9.665 T^{3}-\frac{0.012643}{T^{2}}\right) \mathrm{J} \mathrm{mol}^{-1} \mathrm{~K}^{-1} \text { Calculate } \Delta H \text { when heating } 1 \mathrm{~g} \text { of Fe from } 200-250^{\circ} \mathrm{C} \text {. }