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Why water is not used as the medium for measurement of atmospheric pressure?
Wiki User
∙ 14y ago
Purely a matter of convenience. A water barometer is entirely feasible, but the column height at normal atmospheric pressure is over 32 feet tall. In order to make the barometer more compact, it's convenient to use the heaviest available liquid. Mercury has a little more than 13 times the density of water, so the column height in a mercury barometer is only about 30 inches tall, making for a much more manageable instrument.
Wiki User
∙ 14y ago
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Is high or low pressure cold?
If you mean to ask if cold bodies of water are associated with high or low atmospheric pressure, they aren't. Atmospheric pressure can change independently of the temperature of bodies of water.
How the barometer is used?
A barometer is advice used to atmospheric pressure. They are commonly contain water, air, or mercury. The medium used raises and falls in a tube with a reservoir at the base. The pressure from the outside air pushes on the medium in the exposed reservoir. This push is what causes the medium raise or fall. The measure of the barometer can indicate local weather patterns. High pressure indicates fair weather, while low pressure indicates a storm.
Why does the vapour pressure of water contribute to the total pressure in the bottle?
by equalizing water levels you can assume that the gas you isolated in the chamber is at atmospheric pressure
Why does water boil at a lower temperature on a mountain than sea level?
The boiling of any liquid is tied in to the atmospheric pressure, in an open system. Every liquid has it's own vapor pressure, that is the balance between the vapor and liquid phase. When atmospheric pressure decreases, the vapor pressure increases since now there is greater space for the molecules of the liquid to come into vapor phase. At higher altitudes, the atmospheric pressure is lesser, that is, the air is thinner. Thus the liquid can attain higher vapor pressure faster and boil at a lower temperature.
What C does water boil under normal atmospheric pressure?
100 Celsius
What does it mean 30.77 psg?
30.77 psg means the medium (air, water, ...) pressure is 30.77 pound per square inch above atmospheric pressure.
What is the scale of celsius?
It is a scale for temperature measurement where zero degree is freezing temperature for water and 100 is its boiling point under atmospheric pressure.
State and explain how the boiling point of water will change if the atmospheric pressure falls?
Water boils when its internal pressure reaches that of the atmospheric pressure. Therefor, if one lowers the atmospheric pressure, the water would boil at a lower temperature (in fact, one can make water boil at room temperature by dramatically lowering the atmospheric pressure).
How are atmospheric pressure and water pressure different?
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What happens when pressure greater than atmospheric pressure is applied to pure water or a solution?
If a pressure greater than atmospheric pressure is applied to a solution or pure water, its water potential increases
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).
What is cause of atmospheric pressure?
Just as water pressure is caused by the weight of water, atmospheric pressure is caused by the weight of the air. Pg. 126 Conceptual Physical Science 4th Edition.
What are the different types of pressure feet?
water for example.absolute pressure; gauge pressure; atmospheric pressure
What is potential pressure?
the pressure of water measured relative to the atmospheric pressure at the same elevation.
Where water boils first in lower pressure or high atmospheric pressure?
in Lower pressure water does not have to get as hot to boil
Why is it different at 5000 feet to boil water?
The atmospheric pressure is lower. When you are boiling the water, the water's vapour saturation pressure is able to match the atmospheric pressure faster therefore it boils faster and at a lower temperature.
Is high or low pressure cold?
If you mean to ask if cold bodies of water are associated with high or low atmospheric pressure, they aren't. Atmospheric pressure can change independently of the temperature of bodies of water.
