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The volume of 1.5 kg of helium in a piston-cylinder device is initially 7 m 3 . Now helium is compressed to 2.5 m 3

The volume of 1.5 kg of helium in a piston-cylinder device is initially 7 m3. Now helium is compressed to 2.5 m3 while its pressure is maintained constant at 150 kPa. Determine the initial and final temperatures of helium as well as the work required to compress it, in kJ.

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