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    Molar Mass of Na2Cr2O7 (Sodium Dichromate)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of Na2Cr2O7?

    Answer

    M(Na2Cr2O7) =
    261.965 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
    Nasodium222.99045.980 w ≈ 17.55%
    Crchromium251.996103.992 w ≈ 39.70%
    Ooxygen715.999111.993 w ≈ 42.75%
    Σ = 261.965 g/mol w = 100%

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

    Mass fractions of the elements

    Na 17.55%

    Related Calculations

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    Molar Mass of Na2Cr2O7 (Sodium Dichromate): Step by Step. M(Na2Cr2O7) = 261.965 g/mol: 2 × 22.990 (Na) + 2 × 51.996 (Cr) + 7 × 15.999 (O). Mass fractions: O 42.75%, Cr 39.70%, Na 17.55%.
    https://calculat.io/en/other/molar-mass/na2cr2o7/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    S₈ (octasulfur)256.48
    C₆H₅Na₃O₇ (trisodium citrate)258.069
    Ba(NO₃)₂ (barium nitrate)261.34
    Na₂Cr₂O₇ (sodium dichromate)261.965
    Mg₃(PO₄)₂ (magnesium phosphate)262.855
    AlBr₃ (aluminum bromide)266.694
    PbCO₃ (lead carbonate)267.2
    Recalculate with different values ↑

    FAQ

    What is the molar mass of Na2Cr2O7?

    M(Na₂Cr₂O₇) = 261.965 g/mol

    How to calculate the molar mass of Na₂Cr₂O₇?

    Add up the atomic weights of all the atoms in the formula: 2 × 22.990 + 2 × 51.996 + 7 × 15.999 = 261.965 g/mol.

    How many grams are in 2 moles of Na₂Cr₂O₇?

    m = n × M = 2 mol × 261.965 g/mol = 523.930 g.

    See Also