Multiple Choice
Which of the following is the correct pressure, in kPa, exerted by 1.00 mol of oxygen gas (O_2) in a 22.4 L container at 0°C? (Assume ideal gas behavior.)
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7. Gases
Pressure Units
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Which physical quantity is measured using a manometer?
A
Temperature
B
Volume
C
Density
D
Pressure
Verified step by step guidance1
Understand that a manometer is a device used to measure the pressure of a gas or liquid in a container.
Recall that pressure is defined as force exerted per unit area, and it is commonly measured in units such as pascals (Pa) or atmospheres (atm).
Recognize that a manometer typically consists of a U-shaped tube filled with a liquid (often mercury or water), where the difference in liquid levels corresponds to the pressure difference between the gas and the atmosphere.
Note that temperature, volume, and density are measured by other instruments: temperature by a thermometer, volume by a graduated container, and density by mass and volume measurements.
Conclude that the physical quantity measured by a manometer is pressure.
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