. Each of two vessels of equal volume initially contain 1 g of ideal gas each. One vessel is kept at temperature T1 = 300 K, the other at T2 = 400 K. The vessels are then connected by a thin tube. Find the mass of gas in each vessel when the system reaches the state of mechanical equilibrium. (Assume that once any amount of gas moves from one vessel to the other vessel, the moved gas quickly reaches the temperature of the destination vessel.) [2 points]