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. 40 m³/min of cold air at -50°C (location 1)is mixed with (20+ y/2) m³/min of hot air at 70°C (location 2). The process is adiabatic. All points are at 1.0 atm and assume a constant specific heat for air of Cp 1.005 kJ/(kg °C). Find the following:=

a. The mass flow rate at the exit (3): b. The temperature at the exit (3). T3 = c. The rate of entropy generation:

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