Turbines are useful devices. Argon gas enters an adiabatic turbine at 646.0 kPa and 442.0 °C with a velocity of 96.4 m/s and leaves at 153 kPa with a velocity of 211.0 m/s. The inlet area of the turbine is 63.9 cm2. The power output of this turbine is 258 kW. Argon can be assumed to be an ideal gas with MW = 40.0 g/mol and Cp = 0.5203 kJ/kg °C. Note: The IUPAC sign convention for work is used. Work into the system has a positive value. Find the exit temperature in K.

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