Superheated steam with a state of 450oC, 1.8 MPa flows into an adiabatic mixing chamber at a

Question:

Superheated steam with a state of 450oC, 1.8 MPa flows into an adiabatic mixing chamber at a rate of 0.3 kg/s. A second stream of dry, saturated water vapor at 1.8 MPa enters the chamber at a rate of 0.1 kg/s. There is no pressure loss in the system and the exit pressure is also 1.8 MPa. Determine
(a) The mass flow rate (m⋅3).
(b) Temperature (T3) of the exit flow.
(c) The entropy generation rate (S⋅gen) during mixing.