The pressure of just nitrogen, oxygen, and argon in the air is 0.78 atm, if the total atmospheric pressure is 1.00 atm.
What distinguishes atmospheric pressure from air pressure?
As opposed to atmospheric pressure, which refers to the force of the earth's atmosphere, air pressure is the force of the air around us. Mercury barometers are used to measure atmospheric pressure, while tore gauges are used to measure air pressure.
Why is atmospheric pressure created?
What applies pressure on the atmosphere is the mass of the air molecules above. It weighs down on whatever is underneath because of the massive quantity of air molecules that collectively make up the layers of our atmosphere. Air molecules of all sizes carry some weight.
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