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

Multiple Choice

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?

A) 206 torr
B) 308 torr
C) 370 torr
D) 390 torr
E) 1130 torr