Molar Mass of B (Boron)

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 B?

Answer

M(B) =
10.81 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
Bboron110.8110.81 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
He (helium)4.0026
Li (lithium)6.94
Be (beryllium)9.0122
B (boron)10.81
C (carbon)12.011
N (nitrogen)14.007
O (oxygen)15.999

FAQ

What is the molar mass of B?

M(B) = 10.81 g/mol

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

Only in units: the relative atomic mass Ar(B) = 10.81 has no unit, and the molar mass M(B) = 10.81 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

How many grams are in 2 moles of B?

m = n × M = 2 mol × 10.81 g/mol = 21.62 g.

See Also