Room air. Oxygen is dissolved in nitrogen. That makes up ~99% of room air.
Air is a big one: about 80% nitrogen gas with about 20% oxygen gas dissolved in it, plus small amounts of other gases.
Air is an example of a gas-gas solution.
air,nitrogen
Air. (Oxygen, Carbon Dioxide)
There do not appear to be any solid in gas solutions. However, hydrogen dissolved in palladium is a gas in solid solution.
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