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    Molar Mass of K (Potassium)

    Molar Mass Calculator
    Chemical formula

    What is the molar mass of K?

    Answer

    M(K) =
    39.098 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
    Kpotassium139.09839.098 w = 100.00%

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

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    Molar Mass of K (Potassium): Step by Step. M(K) = 39.098 g/mol: the standard atomic weight of potassium (IUPAC, CIAAW 2024).
    https://calculat.io/en/other/molar-mass/k/generated.jpgCopy

    Neighbouring elements of the periodic table

    FormulaM, g/mol
    S (sulfur)32.06
    Cl (chlorine)35.45
    Ar (argon)39.95
    K (potassium)39.098
    Ca (calcium)40.078
    Sc (scandium)44.956
    Ti (titanium)47.867
    Recalculate with different values ↑

    FAQ

    What is the molar mass of K?

    M(K) = 39.098 g/mol

    How is the molar mass of potassium different from its atomic weight?

    Only in units: the relative atomic mass Ar(K) = 39.098 has no unit, and the molar mass M(K) = 39.098 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

    How many grams are in 2 moles of K?

    m = n × M = 2 mol × 39.098 g/mol = 78.196 g.

    See Also