Question

A container filled with gas is connected to an open-end manometer that is filled with mineral oil. the pressure in the gas container is 753 mm hg and atmospheric pressure is 724 mm. how high will the level rise in the manometer if the densities of hg and mineral oil are 13.6 g/ml and 0.822 g/ml respectively?

Answer 1

The difference in pressure is equal to the pressure exerted by the displaced fluid. Since the Pressure difference is equal, density of fluid is inversely proportional to the height of the column of displaced fluid => (Ď1)(h1) = (Ď2)(h2) (13.6 g/ml)(753 - 724 mm Hg) = (0.822 g/ml)(h2) h2 = (13.6 g/ml)(753 - 724 mm Hg) / (0.822 g/ml) h2 = 480 mm