An ideal gas has a molar heat capacity at constant pressure of `Cp = 2.5 R`. The gas is kept in a closed vessel of volume `0.0083 m^(3)`, at a temperature of `300 K` and a pressure of 1.6 xx 10^(6) Nm^(-2). An amount 2.49 xx 10^(4) J of heat energy is supplied to the gas. calculate the final temperature and pressure of the gas.