Molar Mass of NaBH4 (Sodium Borohydride)

Molar Mass Calculator

What is the molar mass of NaBH₄?

Answer

M(NaBH₄) ≈

37.83 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — B: 10.81.

Contribution of each element
Element	Atoms, n	Atomic weight, A	n × A, g/mol Mass fraction, w	Mass fraction, w
Nasodium	1	22.990	22.990 w ≈ 60.77%	≈ 60.77%
Bboron	1	10.81	10.81 w ≈ 28.57%	≈ 28.57%
Hhydrogen	4	1.0080	4.0320 w ≈ 10.66%	≈ 10.66%
Σ = 37.832 ≈ 37.83 g/mol w = 100%				100%

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

Mass fractions of the elements

Na 60.77%

B 28.57%H 10.66%

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Molar masses of substances nearby

Formula	M, g/mol
Cl (chlorine)	35.45
HCl (hydrogen chloride)	36.46
NH₄F (ammonium fluoride)	37.037
NaBH₄ (sodium borohydride)	37.83
F₂ (fluorine)	37.996
K (potassium)	39.098
Ar (argon)	39.95

FAQ

What is the molar mass of NaBH4?

M(NaBH₄) ≈ 37.83 g/mol

How to calculate the molar mass of NaBH₄?

Add up the atomic weights of all the atoms in the formula: 22.990 + 10.81 + 4 × 1.0080 = 37.832 ≈ 37.83 g/mol.

How many grams are in 2 moles of NaBH₄?

m = n × M = 2 mol × 37.83 g/mol = 75.66 g.

See Also