Question

Increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because

A. the molecules are more spread apart.
B. there are fewer molecules.
C. the molecules are moving more slowly.
D. there are more molecules.

Answer 1

because the molecules are more spread apart.

(gas spread)

Answer 2

Answer: Increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because the molecules are more spread apart.

Step-by-step explanation:

In a container, when volume is increases, the particles get separated from each other.

The intermolecular spacing between the particles increases, which makes the intermolecular interaction between the particles decrease.

When the attraction between the particles decreases, the pressure on the particles also decreases.

Hence, increasing the volume of a given amount of gas at constant temperature causes the pressure to decrease because the molecules are more spread apart.