A piston filled with 0.04 mole of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 37.00C. As it does so, it absorbs 208 J of heat. The values of q and W for the process will be (R = 8.314 J/mol K, ln 7.5 = 2.01)

As the process is carrying out at constant temperature, therefore this type of expansion is called isothermal reversible expansion, for which, ∆U=0. Hence, q=-W i.e., heat absorbed by the system is equal to the work done by the system.Thus,    q = + 208 J             W= - 208 J