An open test tube at 293 K is filled at the bottom with 12.1 cm of Hg and 5.6 cm of water is placed above the mercury. Calculate the pressure at the bottom of the test tube if the atmospheric pressure is 756 mm Hg. Use a density of 1355 kg/m^3 for Hg and 998 kg/m^3 for water. Give the answer in the units of dynes/cm^2, psia, and Pa.