Calculate the enthalpy change in J/kmole that takes place in raising the temperature of 1 kmole of the gas mixture of 80 mole \% Methane and rest ethane from 323K to 873K. Heat capacity equation, Cp=R(A+BT+CT2)cal/g mole, where, R is Gas constant, T is temperature in K.A,B and C are constants and Cp is the heat capacity at constant pressure