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Hydrogen gas is 16x lighter than air.
The atomic weight of Hydrogen is 1 Atomic Mass unit, and the atomic weight of oxygen is 16 atomic mass units. 602,000,000,000,000,000,000,000 hydrogen molecules would weigh 1 gram. The same amount of oxygen would weigh 16 grams.
Clarification: The air we breath is actually a mixture of oxygen, nitrogen, and carbon dioxide. But in this example, I treated it as pure oxygen to keep things simple.
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JudyHydrogen is lighter. This is why balloons rise, they have hydrogen in them.
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Hydrogen is lighter than air, and has been used in large balloons in the past (such as the Hindenburg). However, Helium is also lighter than air, and is what is used in most balloons today, since it is not flammable.
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What is lighter than helium but heavier than air?
hydrogen
What percentage of hydrogen is lighter than air?
100% of hydrogen is lighter than air
Is Nitrous Oxide lighter or heavier than air?
Nitrous oxide is slightly heavier than air.
Is HF heavier than air?
Yes, hydrogen fluoride (HF) is heavier than air because its molecular weight is greater than that of air. This means that HF gas will tend to settle and accumulate at lower levels compared to the lighter components of air.
Which makes balloons fly up in the air carbon dioxide helium or hydrogen?
Helium is typically used to make balloons fly up in the air because it is lighter than air and creates lift. Hydrogen is also lighter than air and can be used, but it is flammable. Carbon dioxide is heavier than air and would cause a balloon to sink.
