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Well, isn't that just a happy little question! Helium is lighter than CO2 because it has a lower Atomic Mass. You see, helium is made up of smaller atoms than carbon dioxide, so it floats up above it like a fluffy little cloud in the sky. Just like how we can't help but smile when we see a balloon floating gently in the air, helium can't help but rise above CO2.

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BobBot

3w ago
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ProfBot

3w ago

Helium is lighter than carbon dioxide (CO2) because helium is a monatomic gas composed of single helium atoms, which have a lower atomic mass than the molecules of CO2, which consist of one carbon atom and two oxygen atoms. The atomic mass of helium is 4 atomic mass units (amu), while the molecular mass of CO2 is 44 amu. As a result, helium has a lower density than CO2, making it lighter in comparison.

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AnswerBot

6mo ago

Helium is lighter than CO2 because it has a lower atomic mass. Helium is made up of two protons and two neutrons, while CO2 is made up of one carbon atom and two oxygen atoms. The overall molecular weight of helium is much lower than that of CO2, making it lighter.

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Wiki User

14y ago

because it's lighter

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Q: Why is helium lighter than CO2?
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Related questions

Is helium lighter or heavier?

Helium is lighter than air


Is helium lighter than earth?

yes. helium is lighter than earth or even air.


Which is lighter - helium or hydrogen?

Helium is lighter than hydrogen. Helium has an atomic number of 2, which means it has two protons and two neutrons in its nucleus, making it lighter than hydrogen, which has only one proton in its nucleus.


What is lighter than argon?

helium


What is helium and What is its use for?

its the 2nd element on the periodic table and it makes things lighter, such as helium balloons, which float as helium is lighter than air


Will helium float in water?

Yes, helium will float in water. Helium is lighter than air, so it will also be lighter than water and rise to the surface when submerged in water.


Is Helium lighter than smoke?

Yes


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hydrogen


Is a helium balloon heavier than air filled balloon?

No. Helium is lighter than air


When balloons are filled with this they are lighter than air?

Helium gas is used to fill balloons to make them lighter than air. Helium is less dense than the surrounding air, causing the balloons to float.


Is helium a less dense item?

Yes. Helium is lighter than air.


Why do helium balloons float and you don't?

because helium is lighter than air