33. The ideal gas equation states that , where P is the pressure, V is the volume, T is the temperature, (L atm)/

(mol K) is the gas constant, and n is the number of moles. Real gases, especially at high pressures, deviate from this behavior.

Their response can be modeled with the van der Waals equation , where a and b are material constants.
For CO2 L2atm/mol2, and L/mol. Make the shown figure that displays two plots of P versus V for L. In one plot the pressure is calculated by using the ideal gas equation and the other by using the van der Waals equation. Label the axes and display a legend.