Question: A gas sample undergoes a reversible isothermal expansion. Figure gives the change S in entropy of the gas versus the final volume Vf of the

A gas sample undergoes a reversible isothermal expansion. Figure gives the change ΔS in entropy of the gas versus the final volume Vf of the gas. The scale of the vertical axis is set by ΔSs = 64 J/K. How many moles are in the sample?

AS, 0.8 1.6 2.4 3.2 4.0 V, (m)

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