A bottle at 21.0oC contains an ideal gas at a pressure of 126.4 x 103 Pa. The rubber stopper closing the bottle is removed. The gas expands adiabatically against Pexternal = 101.9 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 to 21.0oC. What is the final pressure in the bottle for a monatomic gas, for which CV,m = 3/2 R and a diatomic gas, for which CV,m = 5/2 R?