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    Molar Mass of MoO3

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of MoO3?

    Answer

    M(MoO3) ≈
    143.95 g/mol

    Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Mo: 95.95.

    Contribution of each element
    Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
    Momolybdenum195.9595.95 w ≈ 66.66%
    Ooxygen315.99947.997 w ≈ 33.34%
    Σ = 143.947 ≈ 143.95 g/mol w = 100%

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

    Mass fractions of the elements

    O 33.34%

    Related Calculations

    See Also

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    Molar Mass of MoO3: Step by Step. M(MoO3) ≈ 143.95 g/mol: 95.95 (Mo) + 3 × 15.999 (O). Mass fractions: Mo 66.66%, O 33.34%.
    https://calculat.io/en/other/molar-mass/moo3/generated.jpgCopy

    Molar masses of substances nearby

    FormulaM, g/mol
    Ca(ClO)₂ (calcium hypochlorite)142.98
    Cu₂O (copper(I) oxide)143.091
    AgCl (silver chloride)143.32
    MoO₃143.95
    Al₄C₃ (aluminium carbide)143.961
    NaC₆H₅CO₂ (sodium benzoate)144.105
    Nd (neodymium)144.24
    Recalculate with different values ↑

    FAQ

    What is the molar mass of MoO3?

    M(MoO₃) ≈ 143.95 g/mol

    How to calculate the molar mass of MoO₃?

    Add up the atomic weights of all the atoms in the formula: 95.95 + 3 × 15.999 = 143.947 ≈ 143.95 g/mol.

    How many grams are in 2 moles of MoO₃?

    m = n × M = 2 mol × 143.95 g/mol = 287.90 g.

    See Also