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    Molar Mass of H2C2O4 (Oxalic Acid)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of H2C2O4?

    Answer

    M(H2C2O4) =
    90.034 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 ≈ 2.24%
    Ccarbon212.01124.022 w ≈ 26.68%
    Ooxygen415.99963.996 w ≈ 71.08%
    Σ = 90.034 g/mol w = 100%

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

    Mass fractions of the elements

    C 26.68%H 2.24%

    Related Calculations

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    <a href="https://calculat.io/en/other/molar-mass/h2c2o4">Molar Mass of H2C2O4 (Oxalic Acid): Step by Step</a>Copy
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    Molar Mass of H2C2O4 (Oxalic Acid): Step by Step. M(H2C2O4) = 90.034 g/mol: 2 × 1.0080 (H) + 2 × 12.011 (C) + 4 × 15.999 (O). Mass fractions: O 71.08%, C 26.68%, H 2.24%.
    https://calculat.io/en/other/molar-mass/h2c2o4/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    Y (yttrium)88.906
    C₃H₇NO₂ (L-alanine)89.094
    Fe(OH)₂ (ferrous hydroxide)89.859
    H₂C₂O₄ (oxalic acid)90.034
    HC₃H₅O₃ (DL-lactic acid)90.078
    NaClO₂ (sodium chlorite)90.44
    NiS (nickel(II) sulfide)90.75
    Recalculate with different values ↑

    FAQ

    What is the molar mass of H2C2O4?

    M(H₂C₂O₄) = 90.034 g/mol

    How to calculate the molar mass of H₂C₂O₄?

    Add up the atomic weights of all the atoms in the formula: 2 × 1.0080 + 2 × 12.011 + 4 × 15.999 = 90.034 g/mol.

    How many grams are in 2 moles of H₂C₂O₄?

    m = n × M = 2 mol × 90.034 g/mol = 180.068 g.

    See Also