Question

A balloon filled with a helium gas goes up in the gas whereas balloon filled with a cripton gas goes down,why?

Answer 1

Answer:

Explanation:

The gas is pumped from a tank into a Mylar balloon. Unlike a balloon filled with air, a balloon filled with helium needs to be weighted down so it won't float away. ... A: Helium atoms have just two protons, two neutrons, and two electrons, so they have less mass than any other atoms except hydrogen.

Because the weight of the bottle and its air is less than the weight of the water it displaces, the bottle floats. This is the law of buoyancy. ... As long as the helium plus the balloon is lighter than the air it displaces, the balloon will float in the air. It turns out that helium is a lot lighter than air.