Floating Balloon

Shemal has an uninflated balloon. He
fills the uninflated balloon with a gas
and ties it closed. When he lets go, the
balloon floats up into the sky. Shemal
wonders what happens to the mass of
the uninflated balloon compared to
the inflated, floating balloon. What
do you think? Circle the answer that
best matches your thinking.

The floating balloon has more mass.

The floating balloon has less mass.

The mass of the uninflated balloon and the floating balloon is the same.

Describe your thinking. Provide an explanation for your answer.