If the pressure in a gas container that is connected to an open-end U-tube manometer is 116 kPa and the pressure of the atmosphere at the open end of the tube is 752 mmHg,the level of mercury in the tube will:
A)be 118 mm higher in the arm open to the atmosphere
B)be 118 mm higher in the arm connected to the gas cylinder
C)be 870 mm higher in the arm open to the atmosphere
D)be 870 mm higher in the arm connected to the gas cylinder

Question

Quizplus · Accepted Answer

The pressure difference between the gas and the atmosphere is 116 kPa - 752 mmHg (converted to kPa). This difference causes the mercury to rise higher in the arm open to the atmosphere by 118 mm.

If the Pressure in a Gas Container That Is Connected