A monoatomic gas is compressed from a volume of 2 m 3 to a volume of 1 m 3 at a constant pressure of 100 N m 2 . Then it is heated at constant volume by supplying 150 J of energy. As a result, the int

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A monoatomic gas is compressed from a volume of 2 m 3 to a volume of 1 m 3 at a constant pressure of 100 N m 2 . Then it is heated at constant volume by supplying 150 J of energy. As a result, the internal energy of the gas

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Isobaric process with Q = 0 ∴ 0 = W + Δ U ∴ 0 = P Δ V + Δ U ∴ Δ U = - P Δ V = - 1 0 0 1 - 2 J Δ U = 1 0 0 J Constant volume with Q = 150 J Q = 0 + Δ U ∴ Δ U 2 = 1 5 0 J ∴ Δ U = Δ U 1 + Δ U 2 = + 2 5 0 J Hence, internal energy increases by 250 J

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