Calculate the heat capacity of a gas sample from the following information: The sample comes to equilibrium in a flask at 298.15 K (25°C) and 121.3 kPa. A stopcock is opened briefly, allowing the pressure to drop to 101.3 kPa. With the stopcock closed, the flask warms, returning to 298.15 K (25"C), and the pressure is measured as 104.0 kPa. Determine Cp in J mol-1 K-1 as assuming the gas to be ideal and the expansion of the gas remaining in the flask to be reversible and adiabatic.