there must be vacuum in the Mercury barometer because if air enters the tube the barmeter would become faulty as air pressure will change.
Becuase the presure just pushes it up and down so it couldn't boil because it would always be moving
because it was stupid
The purpose of the vacuum in the fresh water generator it can make a 50 degrees Celsius boil the water that's why they create a
A barometer measures air pressure. A mercury one does so by taking a tube full of mercury which is inverted into a dish of mercury. The height of mercury remaining in the tube is a measure of the air pressure.
Mercury, with a density 13 times more than that of water, it takes a long time to boil much less evaporate.
No. There are liquids that boil at a few degrees above absolute zero (helium for example) and liquids that boil at several thousand degrees above absolute zero (tungsten for example)
No, to boil, the material would have to be in a liquid state. Paper is not.
Becuase the presure just pushes it up and down so it couldn't boil because it would always be moving
vacuum is measured in inches of mercury. sea level is zero. water will boil at 212F. as negative pressure or elevation increases the boiling temp. of water decreases. if you had a pressure reading of 29.7 in" of mercury the water will boil at 192F. if you had a pressure reading of 10 in" of mercury water will boil at 32F
Clarification: I am wanting to know how much vacuum I need to pull to get water to boil at 150 degrees.
If the vacuum pump is on, the water will continue to boil. If the vacuum pump is off as the vessel is sealed, the boiling will stop at a point of equilibrium.
Gasoline will eventually boil under extreme vacuum at any temperature but the problem is trying to pull enough vacuum. During a recent experiment it took about 8 hours to pull enough vacuum to boil it to vacuum, the gasoline was at 72 degrees Fahrenheit. Temperature does play a small role when trying to boil under vacuum, this would be true if just trying to boil under normal atmospheric pressures. We pulled enough vacuum to double what was even in space not an efficient way to vaporize fuel.
lead
Vacuum
water
Place the container of water in a vacuum & it should start to boil at room temperature.
The amount of heat needed to boil water varies with the air pressure. Water in a vacuum will boil at room temperature.
Mercury
Choose a vacuum pump with a 29.75 hg that makes water boil 1 degree C. The typical boiling point of water is hundred degrees Celsius.