Question

A balloon contains helium gas. Which applies to the volume of the gas in the balloon when pressure is increased at constant temperature?

A.
the volume of the gas increases

B.
the volume of the gas decreases

C.
the average speed of the gas molecules decreases

D.
the total number of gas molecules remains the same

Answer 1

the volume of the gas decreases

Step-by-step explanation:

As a balloon rises through the atmosphere, the air pressure around it decreases and the balloon expands.

Good luck!