Molar Mass of SiO2 (Silicon Dioxide)

Molar Mass Calculator

What is the molar mass of SiO₂?

Answer

M(SiO₂) =

60.083 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	Mass fraction, w
Sisilicon	1	28.085	28.085 w ≈ 46.74%	≈ 46.74%
Ooxygen	2	15.999	31.998 w ≈ 53.26%	≈ 53.26%
Σ = 60.083 g/mol w = 100%				100%

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

Mass fractions of the elements

O 53.26%Si 46.74%

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Molar masses of substances nearby

Formula	M, g/mol
CH₃COOH (acetic acid)	60.052
CH₄N₂O (urea)	60.056
COS (carbonyl sulfide)	60.07
SiO₂ (silicon dioxide)	60.083
C₃H₇OH (propyl alcohol)	60.096
C₂H₈N₂ (ethylenediamine)	60.100
CH₃NO₂ (nitromethane)	61.040

FAQ

What is the molar mass of SiO2?

M(SiO₂) = 60.083 g/mol

How to calculate the molar mass of SiO₂?

Add up the atomic weights of all the atoms in the formula: 28.085 + 2 × 15.999 = 60.083 g/mol.

How many grams are in 2 moles of SiO₂?

m = n × M = 2 mol × 60.083 g/mol = 120.166 g.

See Also