Question

Petra and Huy are doing a class demonstration to show that solids, liquids, and gases all have mass. They use a balance for the solids and the liquids. They wondered if gases have mass.

Which is the best way for them to show that air has mass?

Use a fan to make a current of air.


Compare the masses of two inflated balloons.


Heat water to show it changing to water vapor.


Compare the masses of an inflated and empty balloon.

Answer 1

It was B, sorry i was gone ;-;

Step-by-step explanation:

I got bored.

Answer 2

B

Step-by-step explanation:

because i already learned thus