H90HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo is 888.1309 g/mol

Convert between H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo weight and moles

Compound	Moles		Weight, g
H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo

Elemental composition of H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	90	10.2141
Helium	He	4.002602	1	0.4507
Lithium	Li	6.941	1	0.7815
Beryllium	Be	9.012182	1	1.0147
Boron	B	10.811	1	1.2173
Carbon	C	12.0107	1	1.3524
Nitrogen	N	14.0067	1	1.5771
Oxygen	O	15.9994	1	1.8015
Fluorine	F	18.9984032	1	2.1391
Neon	Ne	20.1797	1	2.2722
Sodium	Na	22.98976928	1	2.5886
Magnesium	Mg	24.3050	1	2.7366
Aluminum	Al	26.9815386	1	3.0380
Silicon	Si	28.0855	1	3.1623
Phosphorus	P	30.973762	1	3.4875
Sulfur	S	32.065	1	3.6104
Chlorine	Cl	35.453	1	3.9919
Argon	Ar	39.948	1	4.4980
Potassium	K	39.0983	1	4.4023
Calcium	Ca	40.078	1	4.5126
Scandium	Sc	44.955912	1	5.0619
Titanium	Ti	47.867	1	5.3896
Vanadium	V	50.9415	1	5.7358
Chromium	Cr	51.9961	1	5.8546
Manganese	Mn	54.938045	1	6.1858
Iron	Fe	55.845	1	6.2879
Cobalt	Co	58.933195	1	6.6356

Computing molar mass step by step
First, compute the number of each atom in H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo: H: 90, He: 1, Li: 1, Be: 1, B: 1, C: 1, N: 1, O: 1, F: 1, Ne: 1, Na: 1, Mg: 1, Al: 1, Si: 1, P: 1, S: 1, Cl: 1, Ar: 1, K: 1, Ca: 1, Sc: 1, Ti: 1, V: 1, Cr: 1, Mn: 1, Fe: 1, Co: 1 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, Mn: 54.938045, Fe: 55.845, Co: 58.933195 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₉₀HeLiBeBCNOFNeNaMgAlSiPSClArKCaScTiVCrMnFeCo) = ∑ 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) + Count(Mn) * Weight(Mn) + Count(Fe) * Weight(Fe) + Count(Co) * Weight(Co) = 90 * 1.00794 + 1 * 4.002602 + 1 * 6.941 + 1 * 9.012182 + 1 * 10.811 + 1 * 12.0107 + 1 * 14.0067 + 1 * 15.9994 + 1 * 18.9984032 + 1 * 20.1797 + 1 * 22.98976928 + 1 * 24.305 + 1 * 26.9815386 + 1 * 28.0855 + 1 * 30.973762 + 1 * 32.065 + 1 * 35.453 + 1 * 39.948 + 1 * 39.0983 + 1 * 40.078 + 1 * 44.955912 + 1 * 47.867 + 1 * 50.9415 + 1 * 51.9961 + 1 * 54.938045 + 1 * 55.845 + 1 * 58.933195 = 888.1309 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is CH₉₀AlArBBeCaClCoCrFFeHeKLiMgMnNNaNeOPSScSiTiV

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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