Question

What will happen to the volume if the number of moles of a gas is decreased at constant temperature and pressure?

a. the volume will increase.
b. the volume will decrease.
c. the volume will remain the same.
d. the volume will be negative.
a. volume will be negative.
b. volume will decrease.
c. volume will stay the same.
d. volume will increase.

Answer 1

The volume of a gas will decrease if the number of moles of the gas is decreased at constant temperature and pressure.

Step-by-step explanation:

The correct answer is b. the volume will decrease. When the number of moles of a gas is decreased at constant temperature and pressure, the volume of the gas will decrease. This can be explained by Avogadro's Law, which states that at constant temperature and pressure, the volume of a gas is directly proportional to the number of moles of the gas. Therefore, when the number of moles is decreased, the volume will also decrease.