early airships
helium and hydrogen???
in the early 1900s hydrogen gas was used to inflate airships after on large ship crashed and caught on fire teh helium gas began to be used to inflate air ships .why was helium preffered over oxygen?
Air is mostly nitrogen.
According to the ideal gas law, at the same temperature and pressure, all gases have the same volume for a number or moles.
One mole of nitrogen weighs around 28 grams, while one mole of oxygen weighs around 32 grams. Thus, it can be said that oxygen is more dense than air, and won’t provide any lift.
One mole of hydrogen weighs 2 grams, and one mole of helium weighs 4 grams. Thus, as you can see, hydrogen has half the density of helium, and thus provides more lift.
Methane is also lighter than air, but doesn’t provide nearly as much lift as helium or hydrogen,
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