Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-cylinder assembly to a final pressure of 2900 lbf/in.² Kinetic and potential energy effects are negligible. Determine the heat transfer, in Btu per lb of steam, for a polytropic exponent of 1.3, (a) using data from the steam tables. (b) assuming ideal gas behavior.

Steam, initially at 700 lbf/in.2, 550°F undergoes a polytropic process in a piston-cylinder assembly to a final pressure of 2900 lbf/in.² Kinetic and potential energy effects are negligible. Determine the heat transfer, in Btu per lb of steam, for a polytropic exponent of 1.3, (a) using data from the steam tables. (b) assuming ideal gas behavior.

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