28 A gas contained a cylinder fitted with a friction less piston expands against a constant pressure 1 atm from a volume of 4

Question

28 A gas contained a cylinder fitted with a friction less piston expands against a constant pressure 1 atm from a volume of 4 litre to volume of 14 litre In doing so it absorbs 800J thermal energy from surrounding Then the AE for the process is in J

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