The molar base analysis of a mixture of gases at 50ºf and 1atm is 20% air (argon), 35% co2 and 45% o2. the analysis in terms of mpassic fractions; partial pressure of each component in lbf / in^2, the volume occupied by 10lbm of mix in ft^3.

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.