A sample of monoatomic gas Y has a volume of 800 mm3, P = 3.0 atm, and T = 150℃. A different sample contains neon at V = 1750 mm3, P = 5.0 atm, and T = 250℃. The two samples are allowed to interact thermally through a boundary. Calculate the thermal energy of each sample when thermal equilibrium is attained.