Molar Mass of Different Gases

Molar mass is the mass of one mole of a substance, and it is a useful property for calculating the amount of substance present in a given sample. The following table provides a comprehensive list of molar mass values for different gases.

Molar Mass of Gases
Acetylene26.03788
Air28.96415
Ammonia17.03056
Argon39.94800
Arsine77.94542
Boron trichloride117.1691
Boron trifluoride67.80621
Butadiene54.09164
Butane58.1234
Carbon dioxide44.0098
Carbon monoxide28.0104
Carbonyl sulfide60.0764
Chlorine70.9054
Chloroethane64.5144
Chloromethane50.48752
Cyanogen52.03548
Cyclopropane42.08064
Deuterium2.01410
Diborane27.6696
Dichlorosilane101.0068
Dimethylamine45.08432
Dimethyl ether46.06904
Ethane30.06964
Ethylene28.05376
Fluorine37.996806
Helium4.002602
Helium-33.016029
Helium-44.002603
Hydrogen2.01588
Hydrogen bromide80.91194
Hydrogen chloride36.46064
Hydrogen cyanide27.02568
Hydrogen fluoride20.00634
Hydrogen iodide127.9124
Hydrogen sulfide34.08188
Isobutane58.1234
Isobutylene56.10752
Krypton83.798
Methane16.04276
Neon20.1797
Nitric oxide30.00614
Nitrogen28.01348
Nitrogen dioxide46.00554
Nitrogen trifluoride71.00195
Nitrous oxide44.01288
Oxygen31.9988
Ozone47.9982
Phosgene98.9158
Phosphine33.99758
Propadiene40.06476
Propane44.09652
Propylene42.08064
Radon222
Silane32.11726
Silicon tetrafluoride104.0791
Sulfur Dioxide64.0648
Sulfur hexafluoride146.0564
Sulfur trioxide80.0642
Xenon131.293
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 3) A.M. Howatson, P.G. Lun, J.D. Todd, P.D. Engineering Tables and Data. United Kingdom: University of Oxford, Department of Engineering Science, 2009. 4) Occupational Safety and Health Administration (OSHA): The National Institute for Occupational Safety and Health (NIOSH).