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  2. Methane (data page) - Wikipedia

    en.wikipedia.org/wiki/Methane_(data_page)

    1.0008181 ε 0 at −20 °C [4] Bond strength? Bond length: 0.10870 nm [5] Bond angle: 109.5° Magnetic susceptibility: ... Methane vapor pressure vs. temperature.

  3. Methane - Wikipedia

    en.wikipedia.org/wiki/Methane

    Methane is an important greenhouse gas, responsible for around 30% of the rise in global temperatures since the industrial revolution. [58] Methane has a global warming potential (GWP) of 29.8 ± 11 compared to CO 2 (potential of 1) over a 100-year period, and 82.5 ± 25.8 over a 20-year period. [59]

  4. Lifting gas - Wikipedia

    en.wikipedia.org/wiki/Lifting_gas

    Therefore, the amount of mass that can be lifted by hydrogen in air at sea level, equal to the density difference between hydrogen and air, is: (1.292 - 0.090) kg/m 3 = 1.202 kg/m 3. and the buoyant force for one m 3 of hydrogen in air at sea level is: 1 m 3 × 1.202 kg/m 3 × 9.8 N/kg= 11.8 N

  5. Natural gas - Wikipedia

    en.wikipedia.org/wiki/Natural_gas

    This is about 50 to 54 MJ/kg depending on the density. [166] [167] For comparison, the heat of combustion of pure methane is 37.7 MJ per standard cubic metre, or 55.5 MJ/kg. Except in the European Union, the U.S., and Canada, natural gas is sold in gigajoule retail units.

  6. Van der Waals constants (data page) - Wikipedia

    en.wikipedia.org/wiki/Van_der_Waals_constants...

    20.01 0.1281 Tetrachlorosilane [2] 20.96 0.1470 Tetrafluoroethylene [2] 6.954 0.0809 Tetrafluoromethane [2] 4.040 0.0633 Tetrafluorosilane [2] 5.259 0.0724 Tetrahydrofuran [2] 16.39 0.1082 Tin tetrachloride: 27.27 0.1642 Thiophene [2] 17.21 0.1058 Toluene: 24.38 0.1463 1-1-1-Trichloroethane [2] 20.15 0.1317 Trichloromethane [2] 15.34 0.1019 ...

  7. Energy density Extended Reference Table - Wikipedia

    en.wikipedia.org/wiki/Energy_density_Extended...

    Specific energy (MJ/kg) Energy density (MJ/L) Peak recovery efficiency % Practical recovery efficiency % ... 20.9: Thermite (powder Al + Fe 2 O 3 as oxidizer) 4.00:

  8. Acetylene - Wikipedia

    en.wikipedia.org/wiki/Acetylene

    At room temperature, the solubility of acetylene in acetone is 27.9 g per kg. For the same amount of dimethylformamide (DMF), the solubility is 51 g. At 20.26 bar, the solubility increases to 689.0 and 628.0 g for acetone and DMF, respectively. These solvents are used in pressurized gas cylinders. [31]

  9. Wobbe index - Wikipedia

    en.wikipedia.org/wiki/Wobbe_index

    Published Wobbe data may be using 0 °C, 15 °C, 15.56 °C, 20 °C or 25 °C. EU directives on gas quality use 15 °C in accordance with ISO 13443 and ISO 6976 . ρ a i r , S T P {\displaystyle \rho _{air,STP}} is the density of air at standard conditions, M {\displaystyle M} is the molar mass of the gas and M a i r {\displaystyle M_{air}} is ...