4.52 Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2

4.52 Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.2, 2700°R with a mass flow rate of 0.22 lb/s and exit at 29 lbf/in.2 and 1620°R. If heat transfer from the turbine to its surroundings occurs at a rate of 14 Btu/s, determine the power output of the turbine, in hp. __________________________________________________________________________________________
Textbooks:
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Fundamentals of Engineering Thermodynamics 8th Edition (Wiley):
Moran, M. J., et. al., 2014, Fundamentals of Engineering Thermodynamics, 8th ed., Wiley, Hoboken, NJ.
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Engineering Mechanics Statics (Pearson):
Hibbeler, R. C. Engineering Mechanics Statics. Pearson Prentice Hall, Pearson Education, 2016.
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Question says that gas can be modelled as ideal gas, so do we really need to use to property table??