Question: You are to expand a gas adiabatically from 3 MPa and 300C to 80 kPa in a piston-cylinder device. Which of the two choices -

You are to expand a gas adiabatically from 3 MPa and 300°C to 80 kPa in a piston-cylinder device. Which of the two choices - air with an isentropic expansion efficiency of 90 percent or neon with an isentropic expansion efficiency of 80 percent - will produce the most work?

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