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* Fills light bulbs to protect the filament. * Used in fluorescent tubes, glow tubes, etc. Usually blue light. * Used in museums to protect and preserve old documents or materials * Keeps open bottles of wine from oxidizing and to top off wine barrels, so the wine doesn't turn into vinegar * Used in technical scuba diving to inflate dry suits * Argon lasers are used in surgery to weld arteries, destroy tumours.

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Q: What are the uses of nitrogen and argon?
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