The molar heat capacity of N, (g) in the range 200 K to 400 K is given by Cp.m/(J K 'mol') = 28.58 + 3.77 × 10-(T/K). Given that the standard molar entropy of N, (g) at 298 K is 191.6 JK 'mol', calculate the value at 373 K. Repeat the calculation but this time assuming that Cp.m is independent of temperature and takes the value 29.13 ]K 'mol'. Comment on the difference between the results of the two calculations.