An ideal gas (MW = 26.0 lbm/lb·mol) undergoes a poly tropic process (with poly tropic index being 1.67) from an initial state of 6.9836 ft3/lbm and 60°F to a final volume of 0.86848 ft3/lbm. Show the process on a P-v diagram. Find the specific work of the process and the final temperature.