In a cylinder, 1.20mol of an ideal monatomic gas, initially at 3.60×10^5pa and 300k, expands until its volume triples.

a. Compute the work done by the gas if the expansion is isothermal.
b. Compute the work done by the gas if the expansion is adiabatic.
c. Compute the work done by the gas if the expansion is isobaric.