Air is made up of different gases, such as oxygen, nitrogen, and carbon dioxide. which statement best describes these three components of air? they are all classified as pure substances. they cannot react with another substance. they are chemically bonded to one another. they can be classified as elements.

Answer : Option A) They are all classified as pure substances.

Explanation : Air is a mixture of gases which is mainly made up of different gases, such as oxygen, nitrogen, and carbon dioxide. Oxygen exists in the pure forms and exists in nature in free state and also in combined state. Oxygen is also found in air in a triatomic form, which is called ozone.

Nitrogen gas exists in nature in abundance as compared to others, nitrogen is found in free state. Carbon dioxide is a pure substances which readily exists in nature in combined form as carbon is less stable.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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