Two vessels of equal volume of
0.25 m3 contain Helium gas and are connected
by a thin tube. Initially the vessels are at the same temperature,
200 K, and the same pressure, 100 kPa. Then, one of the vessels is
cooled to 100 K, while the temperature of other vessel is
maintained at 200 K. Assuming there are no leaks and the change in
volume due to the temperature change is negligible, the final
pressure of the gas in the vessels will be closest to