A closed system consisting of 2 lb of a gas undergoes a process during which the relation between pressure and volume is constant. The process begins with 20 lbf/in2, 10 ft3 and ends with 100 lbf/in2. The value of 1.3. Determine the final volume, , in ft3, and determine the specific volume at states 1 and 2, in ft3/lb.

10 kg of co2 is initially contained at 400 kpa and 300 k. the gas constant for carbon dioxide is 189 j/lkg k) and has a specific heat ratio, k, of 1.289. isentropic expansion then occurs until the pressure is 200 kpa. a) determine the initial volume of co2 in m. b) determine the final temperature in k. c) determine the work done by the system during the expansion kl.