Question: A sample of 5.0 mol CO2 is originally confined in 15 dm ' at 280 K and then undergoes adiabatic expansion against a constant pressure

A sample of 5.0 mol CO2 is originally confined in 15 dm ' at 280 K and then undergoes adiabatic expansion against a constant pressure of 78.5 kPa until the volume has increased by a factor of 4.0. Calculate q, w, ∆T, ∆U, and MI.
(The final pressure of the gas is not necessarily 78.5 kPa.)

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