At 285 K a bottle has an ideal gas at a pressure of 155.7 x103 Pa. The rubber stopper closing the bottle is removed. The gas expands adiabatically against Pexternal = 111.4 x 103 Pa and some gas is expelled from the bottle in the process.
When P = Pexternal, the stopper is quickly replaced. The gas remaining in the bottle slowly warms up to285 K. Calculate the final pressure in the bottle for a monatomic gas, for which Cv, m = 3R/2 and a diatomic gas for which Cv, m =5R/2 ?