My Voice After Inhaling Sulfur Hexafluoride

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Everyone know what happens to your voice after inhaling helium. Sulfur Hexafluoride does the exact opposite...
Everyone know what happens to your voice after inhaling helium. Sulfur Hexafluoride does the exact opposite and makes your voice really low!! check it out!! (I got to try this stuff in the green room of WMMR's Preston and Steve show during their Science Day show- thanks to some help from the Franklin Institute!)
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