how high would the level be in a water barometer at normal atmospheric pressure?

Atmospheric pressure is commonly measured with a barometer. In a barometer, a column of mercury in a glass tube rises or falls as the weight of the atmosphere changes. Meteorologists describe the atmospheric pressure by how high the mercury rises.

Is 29 barometric pressure high or low?

The barometric pressure seldom goes above 31 inches or drops below 29 inches. Normal sea-level pressure is 29.92 inches.

What does high KPA mean?

The lower the pKa of a Bronsted acid, the more easily it gives up its proton. The higher the pKa of a Bronsted acid, the more tightly the proton is held, and the less easily the proton is given up. Figure AB9. … pKa can sometimes be so low that it is a negative number! High pKa means a proton is held tightly.

Why is the barometric height used as a unit to express the atmospheric pressure?

Barometric height used as a unit to express the atmospheric pressure because atmospheric pressure holds the mercury in the tube, so the height of mercury is used as a unit to express the atmospheric pressure.

Why mercury is used in barometer?

Mercury is employed in the barometer because its density is sufficiently high for a relative short column to be obtained. and also because it has very small vapour pressure at normal temperature. High density scales down the pressure head(h) to repesent same magnitude of pressure in a tube of smaller height.

What will be the height in the barometer below if atmospheric pressure is 1atm?

A mercury barometer. A pressure of 1 atm will support a column of mercury 76 cm high. That is, a pressure of 1 atm will support a column of mercury 76.0 cm high.

What is water barometer?

(Physics) A barometer in which the changes of atmospheric pressure are indicated by the motion of a column of water instead of mercury. It requires a column of water about thirty-three feet in height.

What height would a water barometer needs so that it can be used to measure the standard atmospheric pressure ans 10 m what would be the height of mercury barometer?

Since normal atmospheric pressure is about 105 N/m2 (or 105 Pascals), you would need a mercury column of 0.76 meters (or 760 mm—a common unit for pressure). Using water would require a column 10 meters tall.

How do you calculate barometric pressure?

We know the true uncorrected barometric pressure (TUBP) is 727.5 mm Hg.

Determine the correction factor to adjust maximum O2 saturation to the actual pressure:

  1. Correction Factor = [TUBP ÷ 760]
  2. = (727.5 ÷ 760)
  3. = 0.9572.

How does a water barometer work?

A water barometer is a device that uses water to measure barometric pressure. The device uses the force of gravity, combined with pressure in the air, to create a vacuum, which in turn gives a reading that indicates the barometric pressure changes that are taking place in a specific area.

What is the average sea level pressure?


how high would the level be in a water barometer at normal atmospheric pressure?



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