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+//Variable declaration:
+scfm = 20000.0                  //Volumetric flow rate of air at standard conditions (scfm)
+H1 = 1170.0                     //Enthalpy at 200°F (Btu/lbmol)
+H2 = 14970.0                    //Enthalpy at 2000°F (Btu/lbmol)
+Cp = 7.53                       //Average heat capacity (Btu/lbmol.°F)
+T1 = 200.0                      //Initial temperature (°F)
+T2 = 2000.0                     //Final temperature (°F)
+
+//Calculation:
+n = scfm/359.0                  //Flow rate of air in a molar flow rate (lbmol/min)
+DH = H2 - H1                    //Change in enthalpy (Btu/lbmol)
+DT = T2 - T1                    //Change in temperature (°F)
+Q1 = n*DH                       //Heat transfer rate using enthalpy data (Btu/min)
+Q2 = n*Cp*DT                    //Heat transfer rate using the average heat capacity data (Btu/min)
+
+//Result:
+printf("The heat transfer rate using enthalpy data is : %.2f x 10^5 Btu/min.",Q1/10**5)
+printf("The heat transfer rate using the average heat capacity data is : %.2f  x 10^5 Btu/min.",Q2/10**5)