Abeaker containing mercury is placed inside a vacuum chamber in a laboratory. the pressure at the bottom of the beaker is 26000 pa. what is the height of the mercury in the beaker? the acceleration of gravity is 9.81 m/s 2 .

The mercury density (at liquid state) is


And we know that the pressure at the bottom of a column of fluid is given by (Stevin's law)

where
is the liquid density
g is the gravitational acceleration
h is the height of the column of fluid

The pressure at the bottom of the beaker is , therefore we can re-arrange the previous equation to get the height of the column of mercury

The earths atmosphere is made up of nitrogen and oxygensolids turning into gases is called sublimation.