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    Molar Mass of ZnO (Zinc Oxide)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of ZnO?

    Answer

    M(ZnO) ≈
    81.38 g/mol

    Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Zn: 65.38.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Znzinc165.3865.38 w ≈ 80.34%
    Ooxygen115.99915.999 w ≈ 19.66%
    Σ = 81.379 ≈ 81.38 g/mol w = 100%

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

    Mass fractions of the elements

    O 19.66%

    Related Calculations

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    Molar Mass of ZnO (Zinc Oxide): Step by Step. M(ZnO) ≈ 81.38 g/mol: 65.38 (Zn) + 15.999 (O). Mass fractions: Zn 80.34%, O 19.66%.
    https://calculat.io/en/other/molar-mass/zno/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    SO₃ (sulfur trioxide)80.06
    HBr (hydrogen bromide)80.912
    H₂Se (hydrogen selenide)80.987
    ZnO (zinc oxide)81.38
    H₃PO₃ (phosphonic acid)81.995
    CH₃COONa (sodium acetate)82.034
    H₂SO₃ (sulfurous acid)82.07
    Recalculate with different values ↑

    FAQ

    What is the molar mass of ZnO?

    M(ZnO) ≈ 81.38 g/mol

    How to calculate the molar mass of ZnO?

    Add up the atomic weights of all the atoms in the formula: 65.38 + 15.999 = 81.379 ≈ 81.38 g/mol.

    How many grams are in 2 moles of ZnO?

    m = n × M = 2 mol × 81.38 g/mol = 162.76 g.

    See Also