Hydrogen pressure was at P1 in volume V1 and volume changes to V2 become equal to the pressure P2. The transition from the first state to the second occurred in two stages: first in isochore, followed by adiabatic. The amount of heat absorbed by the gas is equal to the Q, the increment of the internal energy of the U, working gas A. Define A job if P1 = 320 kPa; V1 = 1,75 m ^ 3; P2 = 450 kPa; V2 = 0,95 m ^ 3.

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