Air at 450 kPa and 20°C fills a piston-cylinder assembly to a volume of 0.075 m3. The air expands, in a constant-temperature process, until the pressure is 150 kPa. (The constant-temperature process with a gas can be modeled as a polytropic process with n=1.) Determine the work done by the air as it expands.
Given: P1 = 450 kPa; V1 = 0.075 m3; P2 = 150 kPa
What will be an ideal response?
PV1 = constant, so P1V1 = P2V2
V2/V1 = P1/P2
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