An Open-End Mercury Manometer Was Constructed from a U-Shaped Tube

Multiple Choice

An open-end mercury manometer was constructed from a U-shaped tube and connected to a gas container. In a particular measurement, the level in the end of the tube connected to the gas container measured 62.0 cm above the U-neck, while the level in the open end (to the atmosphere) was 23.8 cm above the U-neck. The outside air pressure in the laboratory was measured as 772 torr. What is the pressure in the gas container?

A) 206 torr
B) 390 torr
C) 734 torr
D) 810 torr
E) 1154 torr