Q:

What is the most common gas in the air we breathe?

A:

Quick Answer

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.

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Full Answer

If the air that is inhaled is impure, then it would have higher concentrations of carbon dioxide, carbon monoxide and sulphur dioxide. Some amount of water vapour and dust particles are also present in the air that is inhaled. The air in industrialized and urban areas could have higher amounts of pollutants due to industrial and vehicular pollution.

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Related Questions

  • Q:

    Why is air important?

    A:

    Air is important for the planet because it contains the gases necessary to support plants, animals and other organisms. Additionally, the presence of an atmosphere keeps the Earth at a habitable temperature.

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  • Q:

    Is pure air homogeneous or heterogeneous?

    A:

    Pure air is a homogeneous mixture made primarily of nitrogen and oxygen. Its elements are not readily separated or distinguished from one another. The composition of air is not uniform and may be influenced by environmental factors, such as industrial pollution, heavy forestation or volcanic activity.

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  • Q:

    What is air made of?

    A:

    Air is made mostly out of nitrogen, oxygen and argon that are kept in proportion to each other. Interestingly, the gas that's most abundant in air isn't oxygen but nitrogen. Air is made up of about 78 percent nitrogen, and oxygen makes up about 21 percent of air.

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  • Q:

    What are the properties of air?

    A:

    Air is matter that has weight and contains 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of argon, carbon dioxide and other ingredients.

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