Question

The pressure of a sample of gas is measured at sea level with a closed-end manometer. The liquid in the manometer is mercury. Determine the pressure of the gas in:

a) 760.0 mm Hg
b) 380.0 mm Hg
c) 1520 mm Hg
d) 0 mm Hg

Answer 1

The pressure of a gas in a closed-end manometer can be determined using the height of the mercury column in the manometer.

Step-by-step explanation:

The pressure of a sample of gas in a closed-end manometer can be determined using the height of the mercury column in the manometer. The pressure of the gas is equal to the atmospheric pressure plus the height of the mercury column.

a) If the height of the mercury column is 760.0 mm Hg, then the pressure of the gas is 760.0 mm Hg + atmospheric pressure.

b) If the height of the mercury column is 380.0 mm Hg, then the pressure of the gas is 380.0 mm Hg + atmospheric pressure.

c) If the height of the mercury column is 1520 mm Hg, then the pressure of the gas is 1520 mm Hg + atmospheric pressure.

d) If the height of the mercury column is 0 mm Hg, then the pressure of the gas is atmospheric pressure.