A cylinder with a movable piston holds 2.95 mol of argon at a constant temperature of 235

Question:

A cylinder with a movable piston holds 2.95 mol of argon at a constant temperature of 235 K. As the gas is compressed isothermally, its pressure increases from 101 kPa to 121 kPa. Find
(a) The final volume of the gas,
(b) The work done by the gas,
(c) The heat added to the gas.