A closed-end mercury manometer is being used to measure gas pressure in a container designed for studies on the gases. In a particular experiment, the mercury in the closed end of this manometer was 622 mm above the U-neck, while the level in the end connected to the container was measured as 252 mm above the U-neck. What is the pressure, in torr, in the gas collection manifold?

Question

Quizplus · Accepted Answer

The pressure in the gas collection manifold is the difference in mercury levels between the closed end and the end connected to the container. The difference is 622 mm - 252 mm = 370 mm, which is equivalent to 370 torr.

A Closed-End Mercury Manometer Is Being Used to Measure Gas