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# Work an engine does per cycle

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Here's the actual problem:

A heat engine using 3.30 grams of helium gas is initially at STP. The gas goes through the following closed cycle:
-Isothermal compression until the volume is halved.
-Isobaric expansion until the volume is restored to its initial value.
-Isochoric cooling until the pressure is restored to its initial value.

A) How much work does this engine due per cycle? Express your answer in joules.

https://brainmass.com/physics/heat-engines/work-engine-per-cycle-29851

#### Solution Preview

A) Molecular weight of Helium = 4 grams/mol
Number of moles of Helium = 3.30/4 = 0.825 mol
Initial Volume = V1 = 22.4L = 0.0224 m^3
V2 = V1/2 = ...

#### Solution Summary

A work of an engine per cycles are given. Isothermal compression until the volume is halved is discussed.

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