HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD is 1697.2437 g/mol

Convert between HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD weight and moles

Compound	Moles		Weight, g
HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD

Elemental composition of HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	1	0.0594
Helium	He	4.002602	1	0.2358
Lithium	Li	6.941	1	0.4090
Beryllium	Be	9.012182	1	0.5310
Boron	B	10.811	1	0.6370
Carbon	C	12.0107	1	0.7077
Nitrogen	N	14.0067	1	0.8253
Oxygen	O	15.9994	1	0.9427
Fluorine	F	18.9984032	1	1.1194
Neon	Ne	20.1797	1	1.1890
Sodium	Na	22.98976928	1	1.3545
Magnesium	Mg	24.3050	1	1.4320
Aluminum	Al	26.9815386	1	1.5897
Silicon	Si	28.0855	1	1.6548
Phosphorus	P	30.973762	1	1.8249
Sulfur	S	32.065	1	1.8892
Chlorine	Cl	35.453	1	2.0889
Argon	Ar	39.948	1	2.3537
Potassium	K	39.0983	1	2.3036
Scandium	Sc	44.955912	1	2.6488
Zirconium	Zr	91.224	1	5.3748
Actinium	Ac	227.027752	1	13.3763
Thorium	Th	232.03806	1	13.6715
Protactinium	Pa	231.03588	1	13.6124
Uranium	U	238.02891	1	14.0244
Plutonium	Pu	238.049560	1	14.0257
Hydrogen	D	2.0141017778	1	0.1187

Computing molar mass step by step
First, compute the number of each atom in HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD: H: 1, 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, Sc: 1, Zr: 1, Ac: 1, Th: 1, Pa: 1, U: 1, Pu: 1, D: 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, Sc: 44.955912, Zr: 91.224, Ac: 227.0277521, Th: 232.03806, Pa: 231.03588, U: 238.02891, Pu: 238.0495599, D: 2.0141017778 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (HHeLiBeBCNOFNeNaMgAlSiPSClArKScZrAcThPaUPuD) = ∑ 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(Sc) * Weight(Sc) + Count(Zr) * Weight(Zr) + Count(Ac) * Weight(Ac) + Count(Th) * Weight(Th) + Count(Pa) * Weight(Pa) + Count(U) * Weight(U) + Count(Pu) * Weight(Pu) + Count(D) * Weight(D) = 1 * 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 * 44.955912 + 1 * 91.224 + 1 * 227.0277521 + 1 * 232.03806 + 1 * 231.03588 + 1 * 238.02891 + 1 * 238.0495599 + 1 * 2.0141017778 = 1697.2437 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is CHAcAlArBBeClFDHeKLiMgNNaNeOPPaPuSScSiThUZr

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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