Molar Mass of C18H36O2 (Stearic Acid)

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 C18H36O2?

Answer

M(C18H36O2) =
284.484 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
Ccarbon1812.011216.198 w ≈ 76.00%
Hhydrogen361.008036.2880 w ≈ 12.76%
Ooxygen215.99931.998 w ≈ 11.25%
Σ = 284.484 g/mol w = 100%

Each fraction is rounded on its own, so the printed ones add up to 100.01%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

H 12.76%O 11.25%

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Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
C₁₈H₃₄O₂ (oleic acid)282.468
P₄O₁₀ (phosphorus pentoxide)283.886
FeH₈N₂O₈S₂ (ferrous ammonium sulfate)284.04
C₁₈H₃₆O₂ (stearic acid)284.484
Na₂CO₃·10H₂O (sodium carbonate decahydrate)286.138
ZnSO₄·7H₂O (zinc sulfate heptahydrate)287.54
CaWO₄ (calcium tungstate)287.91

FAQ

What is the molar mass of C18H36O2?

M(C₁₈H₃₆O₂) = 284.484 g/mol

How to calculate the molar mass of C₁₈H₃₆O₂?

Add up the atomic weights of all the atoms in the formula: 18 × 12.011 + 36 × 1.0080 + 2 × 15.999 = 284.484 g/mol.

How many grams are in 2 moles of C₁₈H₃₆O₂?

m = n × M = 2 mol × 284.484 g/mol = 568.968 g.

See Also