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    Molar Mass of H (Hydrogen)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of H?

    Answer

    M(H) =
    1.0080 g/mol

    Atomic weights: IUPAC standard values (CIAAW, 2024).

    Elemental hydrogen is made of H2 molecules: M(H2) = 2.0160 g/mol = 0.0020160 kg/mol.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Hhydrogen11.00801.0080 w = 100.00%

    Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

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    Molar Mass of H (Hydrogen): Step by Step. M(H) = 1.0080 g/mol: the standard atomic weight of hydrogen (IUPAC, CIAAW 2024). Molecule M(H2) = 2.0160 g/mol.
    https://calculat.io/en/other/molar-mass/h/generated.jpgCopy

    Neighbouring elements of the periodic table

    FormulaM, g/mol
    H (hydrogen)1.0080
    He (helium)4.0026
    Li (lithium)6.94
    Be (beryllium)9.0122
    B (boron)10.81
    C (carbon)12.011
    N (nitrogen)14.007
    Recalculate with different values ↑

    FAQ

    What is the molar mass of H?

    M(H) = 1.0080 g/mol

    Why is the molar mass of hydrogen 1.0080 and not 2?

    1.0080 g/mol is the mass of one mole of H atoms. Elemental hydrogen is made of H₂ molecules: M(H₂) = 2 × 1.0080 = 2.0160 g/mol (2 in school problems); in SI units, 0.0020160 kg/mol. In a problem about the gas, the molar mass of hydrogen is usually M(H₂).

    How many grams are in 2 moles of H?

    m = n × M = 2 mol × 1.0080 g/mol = 2.0160 g.

    See Also