H6He2Li9Be3B4C3N5O7FNe2Na3Mg5Al2SiP7S5Cl6Ar4K6Ca3Sc7Ti2V7Cr8 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈ is 2984.2243 g/mol

Convert between H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈ weight and moles

Compound	Moles		Weight, g
H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈

Elemental composition of H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	6	0.2027
Helium	He	4.002602	2	0.2683
Lithium	Li	6.941	9	2.0933
Beryllium	Be	9.012182	3	0.9060
Boron	B	10.811	4	1.4491
Carbon	C	12.0107	3	1.2074
Nitrogen	N	14.0067	5	2.3468
Oxygen	O	15.9994	7	3.7529
Fluorine	F	18.9984032	1	0.6366
Neon	Ne	20.1797	2	1.3524
Sodium	Na	22.98976928	3	2.3111
Magnesium	Mg	24.3050	5	4.0722
Aluminum	Al	26.9815386	2	1.8083
Silicon	Si	28.0855	1	0.9411
Phosphorus	P	30.973762	7	7.2654
Sulfur	S	32.065	5	5.3724
Chlorine	Cl	35.453	6	7.1281
Argon	Ar	39.948	4	5.3546
Potassium	K	39.0983	6	7.8610
Calcium	Ca	40.078	3	4.0290
Scandium	Sc	44.955912	7	10.5452
Titanium	Ti	47.867	2	3.2080
Vanadium	V	50.9415	7	11.9492
Chromium	Cr	51.9961	8	13.9389

Computing molar mass step by step
First, compute the number of each atom in H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈: H: 6, He: 2, Li: 9, Be: 3, B: 4, C: 3, N: 5, O: 7, F: 1, Ne: 2, Na: 3, Mg: 5, Al: 2, Si: 1, P: 7, S: 5, Cl: 6, Ar: 4, K: 6, Ca: 3, Sc: 7, Ti: 2, V: 7, Cr: 8 Then, lookup atomic weights for each element in periodic table: H: 1.00794, He: 4.002602, Li: 6.941, Be: 9.012182, B: 10.811, C: 12.0107, N: 14.0067, O: 15.9994, F: 18.9984032, Ne: 20.1797, Na: 22.98976928, Mg: 24.305, Al: 26.9815386, Si: 28.0855, P: 30.973762, S: 32.065, Cl: 35.453, Ar: 39.948, K: 39.0983, Ca: 40.078, Sc: 44.955912, Ti: 47.867, V: 50.9415, Cr: 51.9961 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₆He₂Li₉Be₃B₄C₃N₅O₇FNe₂Na₃Mg₅Al₂SiP₇S₅Cl₆Ar₄K₆Ca₃Sc₇Ti₂V₇Cr₈) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(He) * Weight(He) + Count(Li) * Weight(Li) + Count(Be) * Weight(Be) + Count(B) * Weight(B) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(F) * Weight(F) + Count(Ne) * Weight(Ne) + Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(Al) * Weight(Al) + Count(Si) * Weight(Si) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(Ar) * Weight(Ar) + Count(K) * Weight(K) + Count(Ca) * Weight(Ca) + Count(Sc) * Weight(Sc) + Count(Ti) * Weight(Ti) + Count(V) * Weight(V) + Count(Cr) * Weight(Cr) = 6 * 1.00794 + 2 * 4.002602 + 9 * 6.941 + 3 * 9.012182 + 4 * 10.811 + 3 * 12.0107 + 5 * 14.0067 + 7 * 15.9994 + 1 * 18.9984032 + 2 * 20.1797 + 3 * 22.98976928 + 5 * 24.305 + 2 * 26.9815386 + 1 * 28.0855 + 7 * 30.973762 + 5 * 32.065 + 6 * 35.453 + 4 * 39.948 + 6 * 39.0983 + 3 * 40.078 + 7 * 44.955912 + 2 * 47.867 + 7 * 50.9415 + 8 * 51.9961 = 2984.2243 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃H₆Al₂Ar₄B₄Be₃Ca₃Cl₆Cr₈FHe₂K₆Li₉Mg₅N₅Na₃Ne₂O₇P₇S₅Sc₇SiTi₂V₇

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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