The heavy gas sulfur hexafluoride is 5 times heavier than air, which makes experiments with it look like magic tricks with "invisible water"

The heavy heavy gas gas sulfur sulfur hexafluoride hexafluoride is is 5 5 times times heavier heavier than than air, air, which which makes makes experiments experiments with with it it look look like like magic magic tricks tricks with with "invisible "invisible water"

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The heavy gas sulfur hexafluoride is 5 times heavier than air, which makes experiments with it look like magic tricks with "invisible water"
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