They can be depending on the temperature and pressure. They can also be liquids and solids. At room temperature and pressure they are gases.
Helium, hydrogen, and air are gases.
helium and hydrogen...
hydrogen and helium
Hydrogen and helium. Mostly hydrogen.
Gases found are Hydrogen and helium
Hydrogen and helium. Mostly hydrogen.
Mercury is made up of Helium, Hydrogen, and other gases Mercury is made up of Helium, Hydrogen, and other gases
It not being certain of what amount or percentage is considered a "major" or "minor" gas, I have chosen to give the list of known gases in significant quantities: Hydrogen gas- 83% Helium gas- 15% Methane gas- 2%
Helium has replace hydrogen in airships
Mostly Hydrogen and Helium.
Hydrogen, Helium
hydrogen and helium.