C18H12N6 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of C₁₈H₁₂N₆ is 312.3281 g/mol

Convert between C₁₈H₁₂N₆ weight and moles

Compound	Moles		Weight, g
C₁₈H₁₂N₆

Elemental composition of C₁₈H₁₂N₆

Element	Symbol	Atomic weight	Atoms	Mass percent
Carbon	C	12.0107	18	69.2197
Hydrogen	H	1.00794	12	3.8726
Nitrogen	N	14.0067	6	26.9077

Computing molar mass step by step
First, compute the number of each atom in C₁₈H₁₂N₆: C: 18, H: 12, N: 6 Then, lookup atomic weights for each element in periodic table: C: 12.0107, H: 1.00794, N: 14.0067 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (C₁₈H₁₂N₆) = ∑ Count_i * Weight_i = Count(C) * Weight(C) + Count(H) * Weight(H) + Count(N) * Weight(N) = 18 * 12.0107 + 12 * 1.00794 + 6 * 14.0067 = 312.3281 g/mol

Mass percent composition	Atomic percent composition

Related compounds

Formula	Compound name
HNC	Hydrogen isocyanide
HCN	Hydrogen cyanide
CH₅N	Methylamine
CNH₃	Methylene imine
C₃HN	Cyanoacetylene
CHN₅	Pentazine
NH₄CN	Ammonium cyanide
C₅H₅N	Pyridine
C₂H₃N	Acetonitrile
C₃H₃N	Acrylonitrile

Formula in Hill system is C₁₈H₁₂N₆

Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:

Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.
Functional groups: D, T, Ph, Me, Et, Bu, AcAc, For, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
parenthesis () or brackets [].
Common compound names.

Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, nitric acid, potassium permanganate, ethanol, fructose, caffeine, water.

Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it's formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions

Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
Mole is a standard scientific unit for measuring large quantities of very small entities such as atoms and molecules. One mole contains exactly 6.022 ×10²³ particles (Avogadro's number)

Steps to calculate molar mass

Identify the compound: write down the chemical formula of the compound. For example, water is H₂O, meaning it contains two hydrogen atoms and one oxygen atom.
Find atomic masses: look up the atomic masses of each element present in the compound. The atomic mass is usually found on the periodic table and is given in atomic mass units (amu).
Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.
Add them together: add the results from step 3 to get the total molar mass of the compound.

Example: calculating molar mass

Let's calculate the molar mass of carbon dioxide (CO₂):

Carbon (C) has an atomic mass of about 12.01 amu.
Oxygen (O) has an atomic mass of about 16.00 amu.
CO₂ has one carbon atom and two oxygen atoms.
The molar mass of carbon dioxide is 12.01 + (2 × 16.00) = 44.01 g/mol.

Lesson on computing molar mass

Weights of atoms and isotopes are from NIST article.

molecular weights calculated today

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