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Air CompositionThe earth's atmosphere is a mixture of gases, mainly nitrogen (N2) and oxygen (O2), that are held to the earth by gravity. Near the earth's surface, air is composed of about 78 percent nitrogen and about 21 percent oxygen. Small amounts of other gases, such as carbon dioxide (CO2), argon (Ar), methane (CH4), nitrous oxide (N2O), and water vapor (H2O), are also present. The concentration of the invisible water vapor varies from place to place and from time to time. Near the ground in warm tropical locations, the concentration of water vapor may reach 4 percent, while in polar areas its concentrations may be only a small fraction.
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Why there is no such a thing as chemical formula of air?
Because air is a composition of all kinds of gases and is different everywhere.
How does air temperature change with atmospheric composition?
The composition of air depends upon altitude.
How does the composition of air change at the top of amountain?
The composition is the same, the air is just less dense.
What is the composition of gases found in inhaled air?
gas composition in air is the sum of the gas individual element and that of the air i.e oxygen and nitrogen
Does soil from different places have the smae composition and texture?
no, the soil from different places have different composition
Is air sensitivity a physical or chemical properties?
It is a chemical property as air sensitive compounds react with oxygen or air to yield a different compound. Physical properties don't alter the composition of the compound but rather the behaviour through different molecular arrangement.
Can laser heat compressed air?
A laser MAY heat compressed air, but the amount of heating depends on several factors. Air, whether compressed or not, can absorb electromagnetic radiation in the range of frequencies that are used in lasers. How much heating occurs depends on the composition of the air. Note that while air has a typical average composition, the amount of nitrogen, oxygen, water, CO2, and pollutants can vary considerably. Different molecules absorb more strongly in certain characteristic wavelengths. This is the reason spectroscopy can be used to analyze the composition of a sample. It also depends on the exact frequency of the laser; different lasers operate at different frequencies.
Does the composition of air by volume change?
no
What is the composition of liquid air?
The composition of liquid air is: 80 % nitrogen, 19 % oxygen 0,9 % argon, 0,1 % minor gases.
What the oxygen percentade composition in air?
oxygen percentage in air is 20%
Is the composition of air same through out the atmosphere?
No.
Why air is not a heterogeneous mixture?
Well, air contains 78.09% of Nitrogen, 20.95% of Oxygen, 0.03% of Carbon Dioxide and the rest of the gases like Argon, Helium, etc for about 1%. This composition of air is the same no matter where you go. If you're in Australia, the air will have this composition. If you're in South Africa, the air will have the same composition. The basic idea here is that the composition of air doesn't change which means air has a uniform composition. Homogeneous mixtures are those mixtures whose composition is same throughout the mixture and a heterogeneous mixtures are those mixtures whose composition is not same. Also, homogeneous mixtures are mixtures in which its components mix up thoroughly, i.e., the components cannot be observed whereas in a heterogeneous mixture, the individual components can be observed. In air, the Nitrogen or Oxygen cannot be observed separately. It is uniform and homogeneous. Thus, air is not a heterogeneous mixture.
