Question

students created diagrams to demonstrate collisions between gas molecules in a container. they drew dots to represent the gas molecules and arrows to indicate the direction and kinetic energy of each gas molecule. which diagram and explanation best demonstrates the postulates of the kinetic molecular theory of gases? a diagram a: gas molecule collisions are in random motion and perfectly elastic b diagram a: gas molecule collisions are in direct motion and not perfectly elastic c diagram b: gas molecules collision are in direct and random motion d diagram b: gas molecule collisions are not perfectly elastic

Explanation:

The kinetic - molecular theory of gases postulates that gas molecules are in random motion and their collisions are perfectly elastic. Diagram A shows gas molecules moving in random directions and colliding, which is consistent with the theory.

Answer:

A. Diagram A: gas molecule collisions are in random motion and perfectly elastic