The pV diagram in the figure shows a heat engine operating on 0.850 mol of H2 (

Question

The pV diagram in the figure shows a heat engine operating on 0.850 mol of H2 ( Cv= 20.42(J(mol*K)) ,Cp = 28.78(J(mol*K)) Segment ca is isothermal.

http://session.masteringphysics.com/problemAsset/1266265/4/yg.16.19.jpg

a)Without doing any calculations, identify the segments during which heat enters the gas.
Check all that apply.
a->b? b->c? c->a?

b)Without doing any calculations, identify the segments during which heat leaves the gas.
a->b? b->c? c->a?

c) Find the thermal efficiency of this heat engine, treating the gas as ideal.
e = __%?

Explanation / Answer

A- a to b

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