A certain mass of gas with diatomic molecules at a pressure p1 = 140 kPa had a volume V1 = 0.95 m ^ 3, and at a pressure p2 = 330 kPa - a volume V2 = 0.44 m ^ 3. The transition from the first state to the second was made in two stages: first along the isobar and then along the adiabat. Determine the increment in the internal energy of the gas ∆U at this transition.
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