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Inhaling Sulphur Hexafluoride.

Remember the aluminum foil boat floating on sulphur hexafluoride gas we had before? Turns out, if you inhale the gas, it gives you the opposite effect of inhaling helium.

Hit play or go to Link [YouTube] - via A Welsh View

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I was thinking the same thing. I think it would be more of a squeaky low pitched voice, because the heavier gas would stay longer (hexafluoride) while the lighter gas (helium) rose. I'm no scientist though.
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