Al201C540O120P30S30Cl120N90H840Pb70W6O24B9Tl3B3F9V21Se17Ti46 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆ is 43600.6573 g/mol

Convert between Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆ weight and moles

Compound	Moles		Weight, g
Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆

Elemental composition of Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆

Element	Symbol	Atomic weight	Atoms	Mass percent
Aluminum	Al	26.9815386	201	12.4385
Carbon	C	12.0107	540	14.8754
Oxygen	O	15.9994	144	5.2841
Phosphorus	P	30.973762	30	2.1312
Sulfur	S	32.065	30	2.2063
Chlorine	Cl	35.453	120	9.7576
Nitrogen	N	14.0067	90	2.8912
Hydrogen	H	1.00794	840	1.9419
Lead	Pb	207.2	70	33.2656
Tungsten	W	183.84	6	2.5299
Boron	B	10.811	12	0.2975
Thallium	Tl	204.3833	3	1.4063
Fluorine	F	18.9984032	9	0.3922
Vanadium	V	50.9415	21	2.4536
Selenium	Se	78.96	17	3.0787
Titanium	Ti	47.867	46	5.0501

Computing molar mass step by step
First, compute the number of each atom in Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆: Al: 201, C: 540, O: 144, P: 30, S: 30, Cl: 120, N: 90, H: 840, Pb: 70, W: 6, B: 12, Tl: 3, F: 9, V: 21, Se: 17, Ti: 46 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 (Al₂₀₁C₅₄₀O₁₂₀P₃₀S₃₀Cl₁₂₀N₉₀H₈₄₀Pb₇₀W₆O₂₄B₉Tl₃B₃F₉V₂₁Se₁₇Ti₄₆) = ∑ 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) = 201 * 26.9815386 + 540 * 12.0107 + 144 * 15.9994 + 30 * 30.973762 + 30 * 32.065 + 120 * 35.453 + 90 * 14.0067 + 840 * 1.00794 + 70 * 207.2 + 6 * 183.84 + 12 * 10.811 + 3 * 204.3833 + 9 * 18.9984032 + 21 * 50.9415 + 17 * 78.96 + 46 * 47.867 = 43600.6573 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₅₄₀H₈₄₀Al₂₀₁B₁₂Cl₁₂₀F₉N₉₀O₁₄₄P₃₀Pb₇₀S₃₀Se₁₇Ti₄₆Tl₃V₂₁W₆

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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