What is the examples of matter that can be found in the laboratory as gaseous sate?

Answer 1

Carbon Dioxide (CO2), when you breathe out.

Air contains roughly 78% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and trace amounts of other gases, in addition about 1% water vapor.

Answer 2

In a relatively pure form, in the lab? Most labs contain cylinders of nitrogen and or argon. If the lab has a gas supply for bunsen burners, that is mostly methane. Then of course you have the gases that make up the atmosphere, but these are all mixed together.

Answer 3

The air you're breathing ☺

Doug