i need help with this. Thanks

4. (a) Draw P-T and P-V phase diagrams, identify regions of various phases, and show the constant-pressure vaporization process depicted in Figure 2-4 of Text-uploaded in Moodle (p.51) on these diagrams. (b) Apply Gibbs' phase rule in the liquid, liquid-vapor, and vapor regions of the diagram in (a) above and identify the number of degrees of freedom. Fig. 2-4. Typical phase diagram of a pure substance with two lines of isobaric temperature change: 123below critical pressure, 45 above critical pressure