Question

Which is a postulate of the kinetic-molecular theory?

Answer 1

Answer:

Gas particles have a small volume relative to the spaces between them.

Explanation:

Answer 2

• A gas is composed of a large number of particles called molecules (whether monatomic or polyatomic) that are in constant random motion.

• Because the distance between gas molecules is much greater than the size of the molecules, the volume of the molecules is negligible.

• Intermolecular interactions, whether repulsive or attractive, are so weak that they are also negligible.

• Gas molecules collide with one another and with the walls of the container, but these collisions are perfectly elastic; that is, they do not change the average kinetic energy of the molecules.

• The average kinetic energy of the molecules of any gas depends on only the temperature, and at a given temperature, all gaseous molecules have exactly the same average kinetic energy.