A gas expands isothermally against a constant external pressure of 1 atm from a volume of 10 `dm^(3)` to a volume of 20 `dm^(3)`. It absorbs 800 J of thermal energy from its surroundings. The `Delta`U is

A gas contained in a cyclinder fitted with a frictionless piston expands against a constant external pressure of 1 atm from a volume of 5 litres to a volume of 10 litres. In doing so it absorbs 400 J of thermal energy from its surrounding .Determine the change in internal energy of system.

A gas contained in a cylinder fitted with a frictionless piston expands against a constant external pressure or 1 atm from a volume of 5 litres to a volume of 10 litres. In doing so it absorbs 400 J of thermal energy from its surroundings. Determine the change in internal energy of system.

A gas contained in a cylinder fitted with a frictionless piston expands against a constant pressure 1 atmosphere from a volume of 4 litre to a volume of 14 litre. In doing so, it absorbs 800 J thermal energy from surroundings. Determine DeltaU for the process.

One mole of an ideal monoatomic gas at 27^(@) C expands adiabatically against constant external pressure of 1 atm from volume of 10 dm^(3) to a volume of 20 dm^(3) .

One mole of an ideal monoatomic gas at 27^(@) C expands adiabatically against constant external pressure of 1 atm from volume of 10 dm^(3) to a volume of 20 dm^(3) .

One mole of a gas occupying 3 dm^3 expands against constant external pressure of 1 atm to a volume of 13 dm^3. The work done is: