Molar Mass of Co (Cobalt)

Molar Mass Calculator

What is the molar mass of Co?

Answer

M(Co) =

58.933 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024).

CO (carbon monoxide) is a different substance: M(CO) = 28.010 g/mol.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Cocobalt	1	58.933	58.933 w = 100.00%	100.00%

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

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Neighbouring elements of the periodic table

Formula	M, g/mol
Cr (chromium)	51.996
Mn (manganese)	54.938
Fe (iron)	55.845
Co (cobalt)	58.933
Ni (nickel)	58.693
Cu (copper)	63.546
Zn (zinc)	65.38

FAQ

What is the molar mass of Co?

M(Co) = 58.933 g/mol

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

Only in units: the relative atomic mass Ar(Co) = 58.933 has no unit, and the molar mass M(Co) = 58.933 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

How many grams are in 2 moles of Co?

m = n × M = 2 mol × 58.933 g/mol = 117.866 g.

See Also