Air is a mixture of gases, consisting primarily of nitrogen and oxygen, with some trace gases as well. Although the term "air" refers to the gas mixture covering the surface of the Earth, this application results in an inconsistent meaning. Atmospheric air has a precise meaning, and variations among the constituent gases or addition of other gases, such as carbon monoxide, are regarded as contaminants.
Atmospheric air consists of 78.084% nitrogen gas by volume.
Atmospheric air consists of 20.946% oxygen gas by volume.
The concentration of carbon dioxide gas in atmospheric air is 0.038% by volume.
By volume, the concentration of argon in atmospheric air is 0.0934%
The remaining trace gases include neon, helium, krypton, xenon, hydrogen, methane, and nitrous oxide, and their concentrations in atmospheric air is measured in parts per million.
- United States Navy. U.S. Navy Diving Manual. 2008.
- Photo Credit Image by Flickr.com, courtesy of Hamed Saber
Why Would My Central Heater Blow Cold Air?
A central air heater not only provides comfort and protects homeowners from cold-related illnesses during the winter months, but it ultimately enhances...
What Does a House Appraisal Consist Of?
In a house appraisal, a licensed appraiser visits the property and writes a report that includes basic features of the property and...
The Effects of the Hot Air Intake on Gas Mileage
Hot air intakes are after-market devices that can be installed on cars to increase gas mileage. This effect has several advantages for...
What Does a Carburetor Look Like?
A carburetor--usually found on top of a vehicle's engine--looks like a cylindrical apparatus with a small box on the side of it....
What Does the Air National Guard Check for in a Background Check?
The Air National Guard, as with all military branches, wants recruits who are "of strong moral character." So, if you are age...
Carrier Air Handler Specifications
A Carrier air handler constitutes a basic component for forced-air heating unit or air conditioner systems. Many air handlers come as separate...
What Does an Employee Background Check Consist Of?
One reason employers conduct background checks on job candidates is to screen for potential workplace violence and other criminal behavior that could...