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The molecular mass of helium is 4. The molecular mass of nitrogen, the most common component of air, is 28.
Since all gases take up about the same amount of space per mole at a given temperature and pressure, helium is about 7 times less dense than nitrogen, and oxygen, the second most common constituent of dry air, is even more dense than nitrogen.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoAt the same pressure, helium is less dense than air.
"air", as in your normal mix of nitrogen and bits of CO2 and O2. hence why helium balloons float: there's less gravitational force on the helium than the rest of the air, so earth pulls air closer with more force than the helium, and therefore pushing the helium balloon away. Helium is second only to hydrogen in density.
Wiki User
∙ 12y agoYes:
- the density of air is 1,22521 g/L at 15 0C and 760 mm col. Hg
- the density of helium is 0,1786 g/L
Wiki User
∙ 13y agoYes, that is why a balloon filled with helium, rises instead of drooping or staying at the same height.
Wiki User
∙ 11y agoThe density of helium is lighter than that of air.
Wiki User
∙ 13y agoHelium is the less dense substance.
Wiki User
∙ 11y agoOxygen is denser than helium.
Wiki User
∙ 11y agoOxygen is more dense than helium.
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Gas that is less dense than air?
Helium is a gas that is less dense than air. This is why a balloon filled with helium rises when released.
Are noble gases less dense than air?
Helium and neon are less dense than air; argon, krypton, xenon and radon are denser than air.
Why do helium balloons float better than just air balloons?
helium is less dense than air. :) so helium will float better than air
A helium balloon rises in the air because it is less dense than oxygen?
The density of a gas depends on its molecular or atomic mass. Carbon dioxide has a molecular mass of about 44 AMU (Atomic Mass Units) while helium has a mass of about 4 AMU.
Why do hellium-filled balloons rise in air?
Helium rises because it is less dense than air which causes it to rise. For example, styrofoam is less dense than water which is why it floats in water.
Gas that is less dense than air?
Helium is a gas that is less dense than air. This is why a balloon filled with helium rises when released.
Why a balloon filled with helium floats in air?
Helium is less dense than air
What floats on air?
helium balloon because helium is less dense than air
Is helium a less dense item?
Yes. Helium is lighter than air.
Why do helium-filled ballons raise in air?
Because helium is less dense than air.
What makes balloons less dense air?
If a balloon is filled with a substance that's less dense than air ... such as helium, hydrogen, steam, or warmer air ... then the balloon is less dense than air.
Are helium balloons more dense than air baloons?
No. At the same pressure, a helium filled balloon will be less dense than an air-filled balloon.
Are noble gases less dense than air?
Helium and neon are less dense than air; argon, krypton, xenon and radon are denser than air.
Why do helium balloons float better than just air balloons?
helium is less dense than air. :) so helium will float better than air
What has more density air or helium?
The density of helium is less than the density of air. You can infer this without doing any calculations by thinking about the classic example of inhaling the helium from a balloon and talking. Your voice gets squeeky high because helium is less dense than air - that is, your sound waves propagate faster through helium than through air, therefore helium is less dense.
Why do you use helium in balloons?
Helium is less dense than air, and therefore the balloon will float.
Why do helium-filled balloons raise in air?
Because helium is a less dense gas than a general air mixture
