Compare the specific enthalpy change calculated in Problem 2.69 with the change determined directly from the ideal-gas tables. Also compare these values with that obtained from the NIST software or online database at 1 atm.

Problem 2.69

Compute the mass-specific enthalpy change associated with N₂ that is undergoing a change in state from 400 K to 800 K. Assume the constant-pressure specific heat is constant for your calculation. Use the arithmetic average of the values at 400 K and 800 K.