The helium would expand into the air of the room. Depending on how big the room is, and the amount of helium in the jar, it could cause damage to health. The only way this would happen is if the room was small and the jar was big.
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Answer:
The change was physical, meaning it went from liquid to solid, or the other way around.
Explanation:
Answer:
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Explanation:
Answer:
Combination of all the wavelengths of visible light.
Explanation:
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