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Why do helium balloons float? Talk about density of atoms and compare to elements in the air.
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Why do helium balloons float? Talk about density of atoms and compare to elements in the air.

User AlexanderN
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The helium balloon displaces an amount of air. As long as the weight of the helium balloon fabric is lighter than the air it displaces, the balloon will float in the air. It turns out helium is a lot lighter than air.
User Okrumnow
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