Composition of air

• Nitrogen — 78 percent.
• Oxygen — 21 percent.
• Argon — 0.93 percent.
• Carbon dioxide — 0.04 percent.
• Trace amounts of neon, helium, methane, krypton and hydrogen, as well as water vapor.

Air is mostly gas It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

Air is made up of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and other gases in meager amounts.

By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases. Air also contains a variable amount of water vapor, on average around 1% at sea level, and 0.4% over the entire atmosphere.

What is the composition of air? Answer. Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapours and some other gases. It also contains dust particles.

Answer: Air is a mixture of 79% nitrogen, 20% oxygen, 1% carbon dioxide, water vapours and some other gases. Air also contains dust particles.

Lesson Summary

• Air takes up space. It’s made up of atoms and molecules.
• Air is made of gases, including nitrogen, oxygen, water vapor, and other materials. These substances are what give air mass.
• Air exerts pressure.
• Air has weight.
• Air can be compressed.
• Air is affected by temperature.

Air is present in water and soil. Air is a mixture of nitrogen, oxygen, carbon dioxide, water vapour and a few other gases. Some dust particles may also be present in it. Aquatic animals use dissolved air in water for respiration.

Nitrogen

Answer. Nitrogen is a life supporting component of air.

Air is a mixture of gases, consisting primarily of nitrogen (78 %), oxygen (21 %) and the inert gas argon (0.9 %). The remaining 0.1 % is made up mostly of carbon dioxide and the inert gases neon, helium, krypton and xenon.

Pure gases can be separated from air by first cooling it until it liquefies, then selectively distilling the components at their various boiling temperatures. The process can produce high purity gases but is energy-intensive.

There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold. Tropical air masses form in low-latitude areas and are moderately warm. Polar air masses take shape in high-latitude regions and are cold.

Air is a mixture of many gases and tiny dust particles. It is the clear gas in which living things live and breathe. Air is a mixture of about 78% of nitrogen, 21% of oxygen, 0.9% of argon, 0.04% of carbon dioxide, and very small amounts of other gases.

The first type is known as dry air. Dry air is described as having less than 1% of moisture in it. The best location to find this type of air is in the Southwest part of the United States and also in the Middle East. The second type of air is called moist air.

Types of air pollution

• particulate matter.
• nitrogen dioxide.
• ozone.
• sulphur dioxide.

Criteria Air PollutantsThese pollutants are particulate matter, photochemical oxidants (including ozone), carbon monoxide, sulfur oxides, nitrogen oxides and lead.