What was the initial pressure of a gas that had an initial temperature of 905 k and an initial volume of 14.3 l, with a final pressure of 0.83 atm, a final temperature of 154 k and a final volume of 2.7 l? (a) 26 atm (b) 0.27 atm (c) 0.75 atm (d) 1.3 atm (e) 0.92 atm?