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Which is not an example of a lighter-than-air gas? A. Argon B. Hot air C. Hydrogen D. Helium
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Which is not an example of a lighter-than-air gas?

A. Argon
B. Hot air
C. Hydrogen
D. Helium

User Sigourney
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2 Answers

4 votes
I think the answer is A. Argon.
User Tbicr
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8.2k points
3 votes
Imma say the answer is A argon.
User Jmettraux
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8.3k points
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