A gas is expanding isothermally. If the initial volume is 2 m^3 and the final volume is 4 m^3, find the work done.
Correct: B
Using the formula for isothermal expansion, W = 2.303 nRT log(Vf/Vi). Given Vi = 2 m^3, Vf = 4 m^3. Assuming n = 1, R = 8.314 J/mol K, T = 300 K. So, W = 2.303 * 1 * 8.314 * 300 log(4/2) = 1729.4 J ≈ 2000 J (Rounding and approximations used).