Molar Mass of C16H18ClN3S (Methylene Blue)

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 C16H18ClN3S?

Answer

M(C16H18ClN3S) ≈
319.85 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — Cl: 35.45, S: 32.06.

Contribution of each element
Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
Ccarbon1612.011192.176 w ≈ 60.08%
Hhydrogen181.008018.1440 w ≈ 5.67%
Clchlorine135.4535.45 w ≈ 11.08%
Nnitrogen314.00742.021 w ≈ 13.14%
Ssulfur132.0632.06 w ≈ 10.02%
Σ = 319.851 ≈ 319.85 g/mol w = 100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

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

Mass fractions of the elements

N 13.14%Cl 11.08%S 10.02%H 5.67%

Related Calculations

See Also

Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
Ag₂SO₄ (silver sulfate)311.80
C₂₀H₁₄O₄ (phenolphthalein)318.328
ZnI₂ (zinc iodide)319.18
C₁₆H₁₈ClN₃S (methylene blue)319.85
Na₂SO₄·10H₂O (sodium sulfate decahydrate)322.19
PbCrO₄ (lead(II) chromate)323.2
Hg(NO₃)₂ (mercuric nitrate)324.60

FAQ

What is the molar mass of C16H18ClN3S?

M(C₁₆H₁₈ClN₃S) ≈ 319.85 g/mol

How to calculate the molar mass of C₁₆H₁₈ClN₃S?

Add up the atomic weights of all the atoms in the formula: 16 × 12.011 + 18 × 1.0080 + 35.45 + 3 × 14.007 + 32.06 = 319.851 ≈ 319.85 g/mol.

How many grams are in 2 moles of C₁₆H₁₈ClN₃S?

m = n × M = 2 mol × 319.85 g/mol = 639.70 g.

See Also