Two moles of an ideal gas expanded isothermally and reversibly from `1L` to `10L` at `300K`. What is the enthalpy change?

Two moles of an ideal gas is expanded isothermally and reversibly from 1L to 10 L at 300 K. The enthalpy change (in kJ) for the process is

Two moles of an ideal gas is expanded isothermally and reversibly from 1 liter to 10 liter at 300 K . The enthalpy change (in kJ ) for the process

Two moles of an ideal gas is expanded isothermally and reversibly from 2 litre to 20 litre at 300 K. The enthalpy change (in kJ) for the process is

5 moles of an ideal gas expand isothermally and reversible from a pressure of 10 atm to 2 atom at 300K. What is the largest mass which can be lifted through a height of 1 metre in this expansion?