chemical thermodynamics quick plz

Question \#5 One mole of an ideal gas, initially at 30C and 1 bar is changed to 130C and 10 bars. The gas if first heat at constant volume until temperature is 130C, then it is compressed isothermally until its pressure is 10 bars. Cp;7/2R and Cv5/2R. The change in intemal energy is (kJ/mol) : (a) 2.079 (b) 2.91 (c) 6.672 (d) 1.247 Question \# 6 Chlorine is stored at 70C and Pat is 22.49 bar. What is the saturated liquid volume (cm3/mol2) using racket equation: (3 Marks) (a) 53.5 (b) 55.1 (c) 57.0 (d) 59.1 Question \# 7 Isobutane is stored at 120C and Pat is 28.53 bar. Calculate the vapor volume (cm3/mol) using suitable Pitzer equation: (3 Marks) (a) 1405.7 (b) 1154.3 (c) 955.5 (d) 795.8 Question \# 8 One mole of ethylene at 25C and 12 bars is stored in a vessel. Calculate the value of Z and V using virial coefficient B derived from Pitzer correlation. (6 Marks)