Question

which is lighter helium or hydrogen ​

Answer 1

Answer:

Hydrogen and helium are the most commonly used lift gases. Although helium is twice as heavy as (diatomic) hydrogen, they are both significantly lighter than air, making this difference negligible. ... Thus helium is almost twice as dense as hydrogen.

Answer 2

Answer:

Hydrogen and helium are the most commonly used lift gases. Although helium is twice as heavy as (diatomic) hydrogen, they are both significantly lighter than air, making this difference negligible. ... Thus helium is almost twice as dense as hydrogen..

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