A container filled with gas is connected to an open-end U-tube manometer that is filled with mineral oil.The pressure in the gas container is 770 mm Hg and atmospheric pressure is 754 mm Hg.What will be the difference in the levels of mineral oil in the two arms of the manometer if the densities of Hg and mineral oil are 13.6 g/mL and 0.822 g/mL respectively?
A)1.15 mm
B)15.6 mm
C)16.0 mm
D)264 mm

Question

Quizplus · Accepted Answer

The pressure difference between the gas container and the atmosphere is 16 mm Hg (770 mm Hg - 754 mm Hg). To find the difference in mineral oil levels, convert this pressure difference to mineral oil using the density ratio: (16 mm Hg) * (13.6 g/mL / 0.822 g/mL) = 264 mm.

A Container Filled with Gas Is Connected to an Open-End