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Boiling Water - College Essays

Boiling Water

I went online and found out a lot of information about . If you cover the tin and allow the water and air to cool down, the air will cool and contract, lowering the pressure in the tin. If it lowers enough, the partial vacuum will collapse the walls of the can! The boiling point definitely reduces with air pressure. There is a famous demonstration where or coffee is drunk, the trick is it was in a vacuum chamber where it boiled at room temperature. The actual definition of the boiling point of water is the temperature when the vapor pressure of the water equals the atmospheric pressure (the pressure of the air pushing down on the surface of the water).
In the liquid, the water ...

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the very early stages of heating, you may see some small bubbles even though the water is only warm. This is some air that is dissolved in the cold water and is being expelled by the heating. This is not boiling. As the water nears the boiling point, some areas of the container close to the heat source may be hot enough to cause some boiling in that area which produces some local bubbles. To be sure that all of the water is "at the boiling point," you should wait until there is a large amount of bubbles rising to the surface. The bubbles in are made of, air and/or water vapor, depending on how much air has been dissolved in the ...

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Boiling Water. (2004, January 14). Retrieved April 17, 2024, from http://www.essayworld.com/essays/Boiling-Water/1428

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"Boiling Water." Essayworld.com. January 14, 2004. Accessed April 17, 2024. http://www.essayworld.com/essays/Boiling-Water/1428.

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PAPER DETAILS

Added: 1/14/2004 02:13:42 AM
Category: Science & Nature
Type: Premium Paper
Words: 340
Pages: 2

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