A closed rigid tank contains carbon-dioxide at 10 MPa and 100oC. It is cooled until its temperature

Question:

A closed rigid tank contains carbon-dioxide at 10 MPa and 100oC. It is cooled until its temperature reaches 0oC. Determine the pressure at the final state (p2). Use
(a) The RG model with the Lee-Kesler chart.
(b) The RG model with the Nelson-Obert chart and (b) the PC model.