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www.engineeringtoolbox.com/molecular-weight-gas-vapor-d...

Air - Molecular Weight and Composition - Dry air is a mixture of gases where the average molecular weight (or molar mass) can be calculated by adding the weight of each component; Benzene - Thermophysical properties - Chemical, physical and thermal properties of benzene, also called benzol. Phase diagram included.

www.engineeringtoolbox.com/gas-density-d_158.html

Air - Molecular Weight and Composition - Dry air is a mixture of gases where the average molecular weight (or molar mass) can be calculated by adding the weight of each component; Benzene Gas - Specific Heat - Specific heat of Benzene Gas - C6H6 - at temperatures ranging 250 - 900 K

www.teknopoli.com/PDF/Gas_Density_Table.pdf

Digester Gas (Sewage or Biogas) 0.062 Ethane C 2H 6 30.07 1.2641) 0.07891) Ethyl Alcohol 46.07 Ethyl Chloride 64.52 Ethylene C 2H 4 28.03 1.2602) 0.07862) Helium He 4.02 0.16641) 0.010391) N-Heptane 100.20 Gas Formula Molecular weight Density - ρ-kg/m3 lb m/ft3 1) NTP - Normal Temperature and Pressure - is defined as air at

petrowiki.org/Calculating_gas_properties

molecular weight M a = molecular weight of air = molecular weight of C 7+ fraction M g = average molecular weight of gas mixture n = number of moles p = absolute pressure, Pa p c = critical pressure, Pa p pc = pseudocritical pressure of a gas mixture, Pa p r = reduced pressure R = gas-law constant, J/(g mol-K) T = absolute temperature, K T c ...

petrowiki.org/PEH:Gas_Properties

Under limited conditions, where gaseous mixtures conform reasonably well to the ideal-gas laws, the mole fraction can be shown to be equal to the volume fraction but not to the weight fraction. The apparent molecular weight of a gas mixture is equal to the sum of the mole fraction times the molecular weight of each component.

www.lmnoeng.com/idealgas.php

Equations for Gas Specific Gravity and Molecular Weight Conversion. S = M / M air, where S=gas specific gravity, M=gas molecular weight, M air =28.96443 g/mole (molecular weight of standard air - CRC, 1983). The gas specific gravity calculation does not check for unreasonable inputs. Please enter positive values.

www.globalspec.com/calculators/gas-density

This calculator has been scaled to use English units for temperature and pressure. Molecular weights for acetylene, air, ammonia, argon, carbon dioxide, carbon monoxide, chlorine, hydrogen, natural gas, nitrogen, oxygen, propane and steam are all provided.