Question: A piston - cylinder device contains helium gas initially at100 kPa, 10oC, and 0.2 m3. The helium is now compressed in a polytropic process (PVn

A piston - cylinder device contains helium gas initially at100 kPa, 10oC, and 0.2 m3. The helium is now compressed in a polytropic process (PVn = constant) to 700 kPa and 290oC. Determine the heat loss or gain during this process.

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