polytropic
How do I start this problem please?
A closed cylinder contains 40 ml of gas at 800 kPa. The gas expands to a volume of
400 ml according to the relationship pV1.1 = constant. If the heat transfer from the gas to the
surroundings is 300 J, calculate the change in internal energy of the gas during the expansion
process.
Do I use W = P(V2-V1)^1.1 ?
Thanks
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Many thanks