A sealed \(1.50-\mathrm{L}\) chamber filled with helium gas initially at \(20^{\circ} \mathrm{C}\) and \(1.00 \mathrm{~atm}\) is heated until the gas temperature is \(232^{\circ} \mathrm{C}\).

(a) How much thermal energy is added to the gas during this process?

(b) What is the entropy change of the gas during this process?

(c) What was the final pressure inside the container? Ignore any thermal expansion of the container; the mass of a helium atom is \(6.646 \times 10^{-27} \mathrm{~kg}\).