Gases are: carbon dioxide, ammonia, hydrogen sulfide, methane, ethane, hydrochloric acid etc.
CH4 is methane, a gaseous compound at room temperature
Radon is a gaseous chemical element not a compound.
H2O is the chemical formula for water, which is a common compound found on Earth in liquid, solid, and gaseous forms.
This is the usual formula for elemental oxygen in its gaseous state. It could also be called a "diatomic oxygen molecule."
Steam is water in the gaseous phase - a compound.
The gaseous compound is "carbon dioxide."
Ammonia is a compound, not a mixture.
Steam is water in the gaseous phase - a compound.
Steam is water in the gaseous phase - a compound.
H2S is known as hydrogen sulfide.
H2(g) is the compound in the gaseous state in the given reaction.
Steam is simply water in a gaseous state, so it is a compound.