The balloon with krypton gas has a higher density than the balloon with argon gas.
Helium gas is pumped into a balloon.
you have to put gas in a balloon or something for example a balloon compresses gas(helium)
It was made out of the light gas gas Helium.
A balloon filled with hydrogen can explode.
Heat expands the gas (any gas) and makes the balloon rise.
Inside a balloon there is gas. This gas is normally helium if you want the balloon to fly high, but hydrogen also works.
It's a gas. The air molecules are free to move around anywhere in the balloon.
Helium gas is used in a balloon vendor.
The gas inside of a balloon is less dense than the air outside of it if the balloon floats. If the balloon does not float the density of the gas inside of it is equal to or more dense than that around it.
0.250 mol
balloons have carbion dioxide (vaccum) so in the world today vaccum is the best insulaters