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    Molar Mass of H2O2 (Hydrogen Peroxide)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of H2O2?

    Answer

    M(H2O2) =
    34.014 g/mol

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

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Hhydrogen21.00802.0160 w ≈ 5.93%
    Ooxygen215.99931.998 w ≈ 94.07%
    Σ = 34.014 g/mol w = 100%

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

    Mass fractions of the elements

    H 5.93%

    Related Calculations

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    <a href="https://calculat.io/en/other/molar-mass/h2o2">Molar Mass of H2O2 (Hydrogen Peroxide): Step by Step</a>Copy
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    Molar Mass of H2O2 (Hydrogen Peroxide): Step by Step. M(H2O2) = 34.014 g/mol: 2 × 1.0080 (H) + 2 × 15.999 (O). Mass fractions: O 94.07%, H 5.93%.
    https://calculat.io/en/other/molar-mass/h2o2/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    N₂H₄ (hydrazine)32.046
    S (sulfur)32.06
    PH₃ (phosphine)33.998
    H₂O₂ (hydrogen peroxide)34.014
    CH₃F (fluoromethane)34.033
    H₂S (hydrogen sulfide)34.08
    NH₄OH35.046
    Recalculate with different values ↑

    FAQ

    What is the molar mass of H2O2?

    M(H₂O₂) = 34.014 g/mol

    How to calculate the molar mass of H₂O₂?

    Add up the atomic weights of all the atoms in the formula: 2 × 1.0080 + 2 × 15.999 = 34.014 g/mol.

    How many grams are in 2 moles of H₂O₂?

    m = n × M = 2 mol × 34.014 g/mol = 68.028 g.

    See Also