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(d) A piston-cylinder device initially contains 0.4 m³ of air at 115 kPa and 90°C.
The air is now compressed to 0.1 m³ remaining at constant temperature.
Assume that the process is quasi-equilibrium.
(i)
Sketch the P-V diagram of the process.
(ii)
Determine the work done during this process.

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