Molar Mass of Si (Silicon)

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 Si?

Answer

M(Si) =
28.085 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
Sisilicon128.08528.085 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
Na (sodium)22.990
Mg (magnesium)24.305
Al (aluminium)26.982
Si (silicon)28.085
P (phosphorus)30.974
S (sulfur)32.06
Cl (chlorine)35.45

FAQ

What is the molar mass of Si?

M(Si) = 28.085 g/mol

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

Only in units: the relative atomic mass Ar(Si) = 28.085 has no unit, and the molar mass M(Si) = 28.085 g/mol is the mass of one mole of atoms (6.022 × 10²³ of them).

How many grams are in 2 moles of Si?

m = n × M = 2 mol × 28.085 g/mol = 56.170 g.

See Also