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

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

    Heptane [2] 31.06 0.2049 1-Heptanol [2] 38.17 0.2150 Hexane: 24.71 0.1735 1-Hexanol [2] 31.79 0.1856 Hydrazine [2] 8.46 0.0462 Hydrogen: 0.2476 0.02661 Hydrogen bromide: 4.510 0.04431 Hydrogen chloride: 3.716 0.04081 Hydrogen cyanide [2] 11.29 0.0881 Hydrogen fluoride [2] 9.565 0.0739 Hydrogen iodide [2] 6.309 0.0530 Hydrogen selenide: 5.338 0. ...

  3. Heptane - Wikipedia

    en.wikipedia.org/wiki/Heptane

    Heptane or n-heptane is the straight-chain alkane with the chemical formula H 3 C(CH 2) 5 CH 3 or C 7 H 16. When used as a test fuel component in anti-knock test engines, a 100% heptane fuel is the zero point of the octane rating scale (the 100 point is 100% iso-octane ).

  4. Azeotrope tables - Wikipedia

    en.wikipedia.org/wiki/Azeotrope_tables

    This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.

  5. Hexane (data page) - Wikipedia

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

    a = 2471 L 2 kPa/mol 2 b = 0.1735 liter per mole ... 50.2: 84.6: 51.6 50.1: 85.4: 51.6 50.2: 87.5: 51.5 ... of n-Hexane/n-Heptane [5] P = 101.0 kPa BP Temp.

  6. Table of specific heat capacities - Wikipedia

    en.wikipedia.org/wiki/Table_of_specific_heat...

    For gases, departure from 3 R per mole of atoms is generally due to two factors: (1) failure of the higher quantum-energy-spaced vibration modes in gas molecules to be excited at room temperature, and (2) loss of potential energy degree of freedom for small gas molecules, simply because most of their atoms are not bonded maximally in space to ...

  7. Molar volume - Wikipedia

    en.wikipedia.org/wiki/Molar_volume

    The interest stems from that accurate measurements of the unit cell volume, atomic weight and mass density of a pure crystalline solid provide a direct determination of the Avogadro constant. [3] The CODATA recommended value for the molar volume of silicon is 1.205 883 199 (60) × 10 −5 m 3 ⋅mol −1, with a relative standard uncertainty of ...

  8. Asphaltene - Wikipedia

    en.wikipedia.org/wiki/Asphaltene

    Asphaltenes consist primarily of carbon, hydrogen, nitrogen, oxygen, and sulfur, as well as trace amounts of vanadium and nickel. The C:H ratio is approximately 1:1.2, depending on the asphaltene source. Asphaltenes are defined operationally as the n-heptane (C 7 H 16)-insoluble, toluene (C 6 H 5 CH

  9. Hexane - Wikipedia

    en.wikipedia.org/wiki/Hexane

    Hexane (/ ˈ h ɛ k s eɪ n /) or n-hexane is an organic compound, a straight-chain alkane with six carbon atoms and the molecular formula C 6 H 14. [ 7 ] Hexane is a colorless liquid, odorless when pure, and with a boiling point of approximately 69 °C (156 °F).