Molar Mass of C6H9N3O2 (L-histidine)

Molar Mass Calculator

What is the molar mass of C₆H₉N₃O₂?

Answer

M(C₆H₉N₃O₂) =

155.157 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
Ccarbon	6	12.011	72.066 w ≈ 46.45%	≈ 46.45%
Hhydrogen	9	1.0080	9.0720 w ≈ 5.85%	≈ 5.85%
Nnitrogen	3	14.007	42.021 w ≈ 27.08%	≈ 27.08%
Ooxygen	2	15.999	31.998 w ≈ 20.62%	≈ 20.62%
Σ = 155.157 g/mol w = 100%				100%

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

Mass fractions of the elements

C 46.45%

N 27.08%O 20.62%H 5.85%

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Molar masses of substances nearby

Formula	M, g/mol
CCl₄ (carbon tetrachloride)	153.81
NiSO₄ (nickel(II) sulfate)	154.75
CoSO₄ (cobalt(II) sulfate)	154.99
C₆H₉N₃O₂ (L-histidine)	155.157
CaCrO₄ (calcium chromate)	156.070
C₆H₅Br (bromobenzene)	157.010
Gd (gadolinium)	157.25

FAQ

What is the molar mass of C6H9N3O2?

M(C₆H₉N₃O₂) = 155.157 g/mol

How to calculate the molar mass of C₆H₉N₃O₂?

Add up the atomic weights of all the atoms in the formula: 6 × 12.011 + 9 × 1.0080 + 3 × 14.007 + 2 × 15.999 = 155.157 g/mol.

How many grams are in 2 moles of C₆H₉N₃O₂?

m = n × M = 2 mol × 155.157 g/mol = 310.314 g.

See Also