Heavy gases

NEWTONSLIGHT | 18:53 Fri 20th Jul 2007 | Science

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I seen a chemist on tv about a month ago playing with a invisible, inert, nontoxic gas that is 3 times heavier than oxygen. It is used to put out fires and if inhaled does the opposite of helium, it deepens your voice...i cant remember the name of it.....does anyone have any idea what it might be?

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CT

Probably Argon.

Question Author

i found it, its Sulfur Hexaflouride...SF6..Thanks for the replys i appreciate it:)

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