On colliding in in a closed container the gas molecules

Options

A. transfer momentum to the walls
B. momentum becomes zero
C. move in opposite directions
D. perform Brownian motion

Answer

To solve the question regarding what happens when gas molecules collide in a closed container, we can break it down into several steps:

### Step-by-Step Solution:

1. **Understanding Gas Behavior**:
- Gas molecules are in constant random motion. This is a fundamental characteristic of gases, which is explained by the kinetic theory of gases.

2. **Collisions in a Closed Container**:
- In a closed container, gas molecules will collide with each other and with the walls of the container. These collisions are elastic, meaning that there is no loss of kinetic energy during the collision.

3. **Change in Direction**:
- When gas molecules collide, they change direction. This change in direction is a result of the momentum transfer during the collision.

4. **Brownian Motion**:
- The random motion of gas molecules, as a result of these collisions, can be described as Brownian motion. Brownian motion refers to the zigzag or erratic movement of particles due to collisions with other moving molecules.

5. **Conclusion**:
- Therefore, when gas molecules collide in a closed container, they exhibit random or zigzag motion due to the collisions with other gas molecules. This behavior is a direct consequence of the kinetic theory of gases.

### Final Answer:
The gas molecules in a closed container exhibit random or zigzag motion due to collisions with other gas molecules.

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