Helium is lighter than air
Heavier but safer. Look what happened to the Hindenburg:(
hydrogen
No. Helium is lighter than air
yes, anything with a lower atomic number would be lighter, for example, helium is lighter than air, which is why balloons float when filled with helium... the lighter substance rises above the heavier....
Helium exists as a monatomic gas, with atomic mass of 4.0. Thus any gas with a molecular mass higher than 4.0 would be heavier than helium. Hydrogen is the only gas that is lighter than helium; all others are heavier than helium.
No, carbon dioxide is heavier than helium. Carbon dioxide has a molecular weight of about 44 g/mol, while helium has a molecular weight of 4 g/mol. This means that helium is lighter than carbon dioxide and will rise above it in the presence of air.
Helium is a gas and is far more lighter than carbon which is a solid.
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Because, carbon dioxide is heavier than air whereas helium is lighter than air.
Helium is a gas, so it is not lighter than gas. It is like asking why is water heavier than liquid. Helium is less dense than all other gases except hydrogen, because it has an atomic weight of 4.
no. If it was, we would have oxygen balloons instead of helium balloons.
The nuclear process that converts helium and hydrogen into heavier elements is nuclear fusion. In this process, the nuclei of lighter elements combine to form the nuclei of heavier elements, releasing large amounts of energy in the process. This is the process that powers stars like our Sun.