Ethane (C2H6) at 15oC and 300 kPa and methane (CH4) at 60oC and 300 kPa enter an

Question:

Ethane (C2H6) at 15oC and 300 kPa and methane (CH4) at 60oC and 300 kPa enter an adiabatic mixing chamber. The mass flow rate of ethane is 6 kg/s, which is twice the mass flow rate of methane. Determine
(a) The mixture temperature.
(b) The rate of entropy generation during this process, in kW/K.