Question: Helium in a piston/cylinder at 20C, 100 kPa is brought to 400 K in a reversible polytropic process with exponent n = 1.25. You may

Helium in a piston/cylinder at 20°C, 100 kPa is brought to 400 K in a reversible polytropic process with exponent n = 1.25. You may assume helium is an ideal gas with constant specific heat. Find the final pressure and both the specific heat transfer and specific work.

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