A sample of CO2 gas has a volume of 15 L at a pressure of 135 atm and a temperature of 33°C. Determine the following for this gas sample:

a. Volume at T = 35°C and P= 3.50 atm

b. Pressure at T = 42°C and V=10 L

c. Volume in ml at T = 97°C and P= 6.7 atm