Molar Mass of Os (Osmium)

Molar Mass Calculator
Chemical formula Write symbols with a capital letter: CoCl2 is cobalt chloride, COCl2 is phosgene. A hydrate takes a dot: CuSO4·5H2O or CuSO4.5H2O

What is the molar mass of Os?

Answer

M(Os) =
190.23 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
Ososmium1190.23190.23 w = 100.00%

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

See Also

Recalculate with different values ↑

Neighbouring elements of the periodic table

FormulaM, g/mol
Ta (tantalum)180.95
W (tungsten)183.84
Re (rhenium)186.21
Os (osmium)190.23
Ir (iridium)192.22
Pt (platinum)195.08
Au (gold)196.97

FAQ

What is the molar mass of Os?

M(Os) = 190.23 g/mol

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

Only in units: the relative atomic mass Ar(Os) = 190.23 has no unit, and the molar mass M(Os) = 190.23 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

How many grams are in 2 moles of Os?

m = n × M = 2 mol × 190.23 g/mol = 380.46 g.

See Also