Fig. $2.$ P$-$xy diagram of $C{O}_2-$water at $323K($experimental $[13]$ and calculated$).$

Refer to the attached figure, answer the following questions.

Write a MATLAB code and answers for below questions

What is the figure about?

What are the pressure ranges and temperature?

At $323K,8$MPa, what are the two phases of the mixture? What are the water mole

fractions of the two phases?

At $323K,8$MPa, which one listed in $(3)$ is a vapor phase, and which one is a liquid

phase?