Which statement is true about kinetic molecular theory? . a. the size of the particle is large compared to the volume. b. the collisions of particles with one another is completely elastic.. c. the average kinetic energy of a particle is not proportional to the temp. d. a single particle does not move in a straight line.

The correct answer is option b.

Explanation:

According to the kinetic molecular theory of gases, the space in between the molecules of the gas is much greater in comparison to the molecules themselves. The molecules of the gas are in spontaneous random motion. The average kinetic energy is predicted purely by the temperature and all the collisions between the molecules of the gas are entirely elastic, that is, no energy is lost due to the collision.