Al21C54O12P3S3Cl12N9H84Pb6W6O24B9Tl3B3F9V21Se17Ti molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti is 8336.5141 g/mol

Convert between Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti weight and moles

Compound	Moles		Weight, g
Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti

Elemental composition of Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti

Element	Symbol	Atomic weight	Atoms	Mass percent
Aluminum	Al	26.9815386	21	6.7968
Carbon	C	12.0107	54	7.7800
Oxygen	O	15.9994	36	6.9091
Phosphorus	P	30.973762	3	1.1146
Sulfur	S	32.065	3	1.1539
Chlorine	Cl	35.453	12	5.1033
Nitrogen	N	14.0067	9	1.5121
Hydrogen	H	1.00794	84	1.0156
Lead	Pb	207.2	6	14.9127
Tungsten	W	183.84	6	13.2314
Boron	B	10.811	12	1.5562
Thallium	Tl	204.3833	3	7.3550
Fluorine	F	18.9984032	9	2.0510
Vanadium	V	50.9415	21	12.8324
Selenium	Se	78.96	17	16.1017
Titanium	Ti	47.867	1	0.5742

Computing molar mass step by step
First, compute the number of each atom in Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti: Al: 21, C: 54, O: 36, P: 3, S: 3, Cl: 12, N: 9, H: 84, Pb: 6, W: 6, B: 12, Tl: 3, F: 9, V: 21, Se: 17, Ti: 1 Then, lookup atomic weights for each element in periodic table: Al: 26.9815386, C: 12.0107, O: 15.9994, P: 30.973762, S: 32.065, Cl: 35.453, N: 14.0067, H: 1.00794, Pb: 207.2, W: 183.84, B: 10.811, Tl: 204.3833, F: 18.9984032, V: 50.9415, Se: 78.96, Ti: 47.867 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Al₂₁C₅₄O₁₂P₃S₃Cl₁₂N₉H₈₄Pb₆W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti) = ∑ Count_i * Weight_i = Count(Al) * Weight(Al) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(N) * Weight(N) + Count(H) * Weight(H) + Count(Pb) * Weight(Pb) + Count(W) * Weight(W) + Count(B) * Weight(B) + Count(Tl) * Weight(Tl) + Count(F) * Weight(F) + Count(V) * Weight(V) + Count(Se) * Weight(Se) + Count(Ti) * Weight(Ti) = 21 * 26.9815386 + 54 * 12.0107 + 36 * 15.9994 + 3 * 30.973762 + 3 * 32.065 + 12 * 35.453 + 9 * 14.0067 + 84 * 1.00794 + 6 * 207.2 + 6 * 183.84 + 12 * 10.811 + 3 * 204.3833 + 9 * 18.9984032 + 21 * 50.9415 + 17 * 78.96 + 1 * 47.867 = 8336.5141 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₅₄H₈₄Al₂₁B₁₂Cl₁₂F₉N₉O₃₆P₃Pb₆S₃Se₁₇TiTl₃V₂₁W₆

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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