Densities of various gases

 

Substance Density (kg/m3)
 Acetylene 1,170
 Air 1,225
 Ammonia 0,770
 Argon 1,782
 Carbon monoxide(CO) 1,250
 Carbonic acid (CO2) 1,980
 Chlorine 3,214
Substance Density (kg/m3)
 Fluorine 1,696
 Helium 0,179
 Hydrogen 0,090
 Krypton 3,708
 Methane 0,710
 Natural gas 0,710
 Neon 0,900
Substance Density (kg/m3)
 Nitrogen 1,251
 Oxygen 1,429
 Ozone 2,140
 Propane 2,000
 Radon 9,730
 Xenon 5,880