Argon (Ar) at 300 K, and 1 bar with a mass flow rate of 4.8 kg/s enters an insulated mixing chamber and mixes with carbon dioxide (CO2) entering as a separate stream at 590 K, and 1 bar with a mass flow rate of 4.3 kg/s. The mixture exits at 1 bar. Assume ideal gas behavior with k=1.67 for Ar and k=1.25 for CO2. Take the molar mass for both Ar and CO2 equals to 39.94 kg/kmole and 44.01 kg/kmole respectively. Also, take the universal gas constant equals 8.314 kJ/kmole.K. The specific heat at constant pressure for both Ar, and CO2 is 0.5189 kJ/kg.k. and 0.9446 respectively. For steady state operation, determine the temperature in (k), and the entropy production in (kW/k) of the exiting mixture.