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They are filled by Hydrogen gas.
helium is generally filled in helium balloons
Yes, balloons filled with helium will be buoyant in air
No. Helium is non-flammable.
alveoli
258 helium filled balloons filled to 34 psi each
They are filled by Hydrogen gas.
Helium
helium is generally filled in helium balloons
No, it is filled with heated air.
bcoz helium is lighter than air
Balloons are not called helium; they can be filled with helium because this gas is not flammable and has a very low density.
If I am right in interpreting the question as "Are balloons normally filled with hydrogen and oxygen?", then the answer would be no. Although they can be, as both substances are gases, the majority of balloon are filled with air, a mixture of nitrogen, oxygen, carbon dioxide and other gases. If you mean the balloons that float, they are filled with helium
filled the room
It is simply air that has been heated. Hence the namehot air balloons are filled with hot air from a propane tank
Yes, balloons filled with helium will be buoyant in air
From common sense you'd think that the answer is carbon dioxide. But try it and you discover the opposite.