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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.
Wiki User
∙ 12y ago
Wiki User
∙ 13y agoHydrogen 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 heavier than air.
Are hydrocarbons heavier than air?
Some are heavier, but some are lighter. For example, methane rises but propane sinks.
A basic gas lighter than air?
Hydrogen and Helium are both lighter than air.
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
What is the difference between lighter than air vehicles and heavier than air vehicles?
Just, simply, Lighter than Air Vehicles are lighter than air, so that makes them fly, and Heavier than air vehicles are heavier than air, but they use airfoils on the wings to fly.
Is Nitrous Oxide lighter or heavier than air?
Nitrous Oxide is heavier than air.
Is helium lighter or heavier?
Helium is lighter than air
Is Xenon heavier or lighter than air?
Xenon is more than 4.5 times heavier than air.
Is natural gas lighter or heavier than air?
Natural gas is lighter than air and rises.
Why are aircraft categorized into heavier-than-air and heavier-than-air vehicles?
One is lighter and the other one is heavier. :D
Is moist air heavier or lighter than dry air?
Moist air is heavier than dry air, because of the water.
Is R134a lighter than air?
No, it is heavier than air and will sink to the floor.
Are hydrocarbons heavier than air?
Some are heavier, but some are lighter. For example, methane rises but propane sinks.
Why are aircrafts categorized into heavier-than-air and lighter-than-air?
they are heavier than air hence why they don't fly unless in motion.
