Calculate the entropy difference for the same substance and conditions of Exercise 6.2(b), and compare it with the values you can obtain with GASMIX. Why is there
a small difference?

Data From Exercise 6.2

(b) The coefficients for c_{P -} (T) of carbon dioxide in the range 100 –1000 K are K₁ = 23.87, K₂ = 52.85 × 10⁻³ and K₃ = −23.47 × 10⁻⁶. Calculate the difference in internal energy and enthalpy of carbon dioxide between 340 K and 290 K at 0.1 MPa.