Chemistry, 29.07.2019 17:30 sixtomomtermont

According to the kinetic theory, collisions between molecules in a gas a. are inelastic b. never occur c. cause a loss of total kinetic energy d. are perfectly elastic,

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One of the main tenets of kinetic molecular theory is the the molecules of gas conserve their kinetic energy perfectly when they collide with each other (or the walls of the container for that matter), thus keeping them in constant motion. Since this is the definition of then elastic collision (one in which kinetic energy is maintained), then the answer is "d. are perfectly elastic".

Answer from: tward4569

According to the kinetic theory, collisions between molecules in a gas $\boxed{{\text{d}}{\text{. are perfectly elastic}}}$ .

Further Explanation:

Kinetic theory of gases represents gas as a large number of particles that are in continuous random motion. It describes the macroscopic properties of gases by taking into account their molecular composition and motion.

Postulates of kinetic theory of gases:

1. Molecules present in a gas are small and are far apart from each other. Most of the volume occupied by the gas is empty space.

2. The molecules of the gas are in rapid random motion. These can move in all directions.

3. The gas molecules undergo collisions with each other and with the walls of the container, thereby possessing gas pressure.

4. There is no loss of kinetic energy when gas molecules collide so their collisions are known as perfectly elastic. There is no change in the average kinetic energy of gas molecules.

5. No interaction occurs between different molecules of gas while undergoing collisions.

The molecules of gas collide with each other and also with the walls of the container but their average kinetic energy remains constant. Therefore collisions between gas molecules are perfectly elastic.

Learn more:

What is the kinetic energy of electrons? Calculate the frequency of yellow light:

Answer details:

Grade: High School

Subject: Chemistry

Chapter: Ideal gas equation

Keywords: collisions, gas, random motion, kinetic energy, perfectly elastic, interaction, container, kinetic theory of gases, volume, empty space, gas pressure.

Answer from: Quest

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