b. the pressure in MPa at the final state. Make sure to illustrate your work on the generalized compressibility chart given in Figure Q1b. [15] Water vapour in a closed and rigid container is at 39.7MPa and 490C. By removing some heat, the water vapour is cooled to a temperature of 410C. Using the compressibility charts provided below (not the steam tables!) estimate a. the specific volume of the water vapour in m3/kg at the initial state. Make sure to illustrate your work on the generalized compressibility chart given in Figure Q1a. Data: critical temperature of water; Tc=647.3K; critical pressure of water, Pc=22.05MPa. [15]