The one with the highest molecular/atomic weight.
oxygen gas is heavier than hydrogen gas
Yes, LP gas is heavier than air.
Oxygen gas is considered heavier than other gases (like nitrogen and helium) because the oxygen molecule (O2) has a higher molecular weight due to its two oxygen atoms bonded together. This higher molecular weight causes oxygen gas to be denser and therefore heavier than some other gases.
Carbon dioxide (CO2) is heavier than air.
Yes, natural gas is lighter than air. It will rise and dissipate into the atmosphere if released into the air.
Yes, LP (liquefied petroleum gas) is heavier than air.
Helium exists as a monatomic gas, with atomic mass of 4.0. Thus any gas with a molecular mass higher than 4.0 would be heavier than helium. Hydrogen is the only gas that is lighter than helium; all others are heavier than helium.
There are other gasses that are heavier (denser). The MOST dense gas is a rare highly corrosive gas known as tungsten hexafluoride. A more common gas, Radon, is about 5 times heavier than CO2. It is radioactive, though.
This depends on the gas.
Mass of Hydrogen gas:- 2g/mol Mass of Oxygen gas :- 32g/mol Therefore, Oxygen gas is more heavier
Neon
Yes, water is heavier than gas.