Four moles of an ideal gas undergo a reversible isothermal, Ask an Expert

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Four moles of an ideal gas undergo a reversible isothermal expansion from volume V1 to volume V2 = 5V1 at temperature T = 400K.

a) Find the work done by the gas.

b) Find the entropy change of the gas. (J/deg).

c) If the expansion is reversible and adiabatic instead of isothermal, what is the entropy change of the gas? (J/deg).

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