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Millibars. Inches of Mercury or feet of water

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14y ago
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10y ago

The smallest unit of atmospheric pressure is the Bar. the next smallest unit of atmospheric pressure is the Pascal, and the largest unit of atmospheric pressure is the Torr.

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10y ago

The unit of pressure in SI is Pascal (equal to 1 N/m2).

In non-SI systems many other units (with multiples and submultiples) exist.

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6y ago

There are several commonly used units for measuring atmospheric pressure. The most common would be atmospheres, Pascals or kilo pascals, and mm Hg (or Torr).

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13y ago

PSI?

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Q: What is the unit of measuring atmospheric pressure?
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Continue Learning about Chemistry

You are collecting gas over H2O in an experiment does the atmospheric pressure have anything to do with the pressure inside the gas collection container?

Yes, the pressure inside the collection container will be exactly equal to the atmospheric pressure if the water level in the collection container is level with the rest of the water. If the atmospheric pressure is different, then the pressure inside the collection container will be different, and that will affect how you calculate the amount of gas collected. If the pressure is different due to the difference in altitude of the location, or even different weather, the results will be different. Simply measuring the atmospheric pressure with a barometer will allow you correct for any such differences.


What is barometric pressure measured by?

A barometer measures atmospheric pressure to determine weather or altitude changes.


What term defines the temperature at which the vapor pressure of the liquid equals the atmospheric pressure?

The temperature at which the vapor pressure of the liquid equals the atmospheric pressure is called THE BOILING POINT.


If the atmospheric pressure is 29.4 inches of mercury what is the corresponding pressure of mercury?

If the atmospheric pressure is 29.4 inches of mercury the corresponding inches of mercury is: 880.


Why does water boil when the vapor pressure is equal to atmospheric pressure?

Because while atmospheric pressure is the greater of the two the vapour pressure of the water can not spontaneously form bubbles (ie boil).

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