Question

Air consists of

A) a mixture of gases that behaves as if it were a single gas.
B) gases that are not well mixed.
C) oxygen only.
D) all of the above.

Answer 1

Air consists of a mixture of gases that behaves as if it were a single gas.

Step-by-step explanation:

Air is a mixture of gases, primarily nitrogen (N₂; 78.6 percent), oxygen (O₂; 20.9 percent), water vapor (H₂O; 0.5 percent), and carbon dioxide (CO₂; 0.04 percent). The gas components of the mixture exert individual pressures called partial pressures. The atmosphere is a solution of gases that behaves as if it were a single gas. Therefore, the correct answer is A) a mixture of gases that behaves as if it were a single gas.