Pure. (Its nitrous oxide.)
Pure. (gas)
Helium gas is a pure substance
Helium gas is a pure substance
Helium gas is a pure substance
Oxygen is an element indicating that is a pure substance.
It depends. You can have a gaseous mixture such as air, which would be a homogeneous mixture. But a single gas such as oxygen or methane would be a pure substance.
nitrogen gas is BASICALLY JUST PLAIN NITROGEN AND THUS IT IS A PURE SUBSTANCE.
Helium is pure as it is on the periodic table.
Yes, it is a pure substance but can be mixed with other gases.
Hydrogen gas is a pure substance because it consists of only one type of atom, which is hydrogen. It is not a mixture because it does not contain different substances mixed together.
No. Argon gas is a pure substance. It is a noble gas element
Yes, hydrogen gas is a pure substance because it consists of only hydrogen atoms. It is a homogeneous mixture of identical molecules, making it a pure substance.