Property Units Hydrogen Methane Propane Methanol Ethanol Gasoline Chemical Formula   H2 CH4 C3H8 CH3OH C2H5OH CxHy (x = 4 - 12) Molecular Weight [a, b]   2.02 16.04 44.1 32.04 46.…
Contains a comparison of the amount of fuel necessary to provide the same energy unit based on the lower heating values.
Hydrogen Compressibility at different temperatures and pressures
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Hydrogen mass and volume conversion factors at common temperatures and pressures. Data from NIST.
Contains lower and higher heating values for hydrogen and various solid, liquid, and gaseous fuels.