2.1 Assuming that air is an ideal gas, calculate the change in entropy and enthalpy when 100 mol of air at 25°C and 1 atm is heated and compressed to 300°C and 10 atm. Use the following equation for $C_p$:
$\frac{C_p}{R} = A + B \cdot T + C \cdot T^{-2}$
where A = 3.355, B = 0.575 × 10?³, and C = -0.016 × 10?, with T in K.