An open test tube at 293 K is filled with 12.1 cm of Hg at the bottom, and 5.6 cm of water is added above the Hg to create a vacuum. Calculate the pressure at the bottom of the test tube if the surrounding atmosphere has a pressure of 756 mmHg or higher. For mercury, use a density of 13.55 g/cm3 and for water, use a density of 0.998 g/cm3.

Prove: 1.175x10^6 dyn/cm^2