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    Molar Mass of H2 (Hydrogen)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of H2?

    Answer

    M(H2) =
    2.0160 g/mol

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

    One H atom: M(H) = 1.0080 g/mol; H2 is two atoms.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Hhydrogen21.00802.0160 w = 100.00%

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

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    <a href="https://calculat.io/en/other/molar-mass/h2">Molar Mass of H2 (Hydrogen): Step by Step - Calculatio</a>Copy
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    Molar Mass of H2 (Hydrogen): Step by Step. M(H2) = 2.0160 g/mol: 2 × 1.0080 (H). Atom M(H) = 1.0080 g/mol. Step-by-step calculation from IUPAC atomic weights.
    https://calculat.io/en/other/molar-mass/h2/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    H (hydrogen)1.0080
    H₂ (hydrogen)2.0160
    He (helium)4.0026
    Li (lithium)6.94
    Be (beryllium)9.0122
    B (boron)10.81
    C (carbon)12.011
    Recalculate with different values ↑

    FAQ

    What is the molar mass of H2?

    M(H₂) = 2.0160 g/mol

    How to calculate the molar mass of H₂?

    Add up the atomic weights of all the atoms in the formula: 2 × 1.0080 = 2.0160 g/mol.

    How many grams are in 2 moles of H₂?

    m = n × M = 2 mol × 2.0160 g/mol = 4.0320 g.

    See Also