Does a Vacuum Float?

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I have a container that itself floats on water. The container has two compartments. The first contains pure Hydrogen at sea level pressure. The other is a vacuum… no air at all. Why would one side float while the other sinks? I’ve got it in my head that the vacuum side is neutral when it comes to weight, or that Hydrogen is somehow lighter.

Would it be different with 25% normal air in each side?

In: Chemistry

5 Answers

Anonymous 0 Comments

> Why would one side float while the other sinks?

It doesn’t. Things float because of the water they displace provides buoyancy. Hydrogen lightens the container and helps, but a vacuum has no effect.

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