Calculate the energy required to change the temperature of 1.17 kg of ethane (C2H6) from 25.0°C to 70.4°C in a rigid vessel. (Cv for C2H6 is 44.60 J K-1 mol-1.)
Calculate the energy required for this same temperature change at constant pressure.
Calculate the change in internal energy of the gas in each of these processes.
a) constant volume
b) constant pressure