The dependence of enthalpy on temperature (in Kelvin)

The dependence of enthalpy on temperature (in Kelvin) of many chemicals are given by the relationship_H=AT BT^2-C/TFor hydrogen gas the constants yielding a final value in units of J/mol are A= 27.28 B=0.00163 C=5×104Applicable in the range 298-3000 K. Calculate its molar heat capacity at constant pressure at 500 K.