A flask containing argon gas is connected to a closed-ended mercury manometer. The closed end is under vacuum. If the mercury level in the closed arm is 230. mm above that in the arm connected to the flask, what is the argon pressure, in torr?

Question

Quizplus · Accepted Answer

The pressure of the argon gas is equal to the difference in mercury levels between the two arms of the manometer. Since the closed end is under vacuum, the pressure difference is directly the height of the mercury column, which is 230 mm Hg or 230 torr.

A Flask Containing Argon Gas Is Connected to a Closed-Ended