H98362He3Li67Be12B116C9568N1912O2311F96Ne2Na36Mg98Al326SI288 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈ is 330106.3344 g/mol

Convert between H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈ weight and moles

Compound	Moles		Weight, g
H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈

Elemental composition of H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	98362	30.0337
Helium	He	4.002602	3	0.0036
Lithium	Li	6.941	67	0.1409
Beryllium	Be	9.012182	12	0.0328
Boron	B	10.811	116	0.3799
Carbon	C	12.0107	9568	34.8125
Nitrogen	N	14.0067	1912	8.1128
Oxygen	O	15.9994	2311	11.2008
Fluorine	F	18.9984032	96	0.5525
Neon	Ne	20.1797	2	0.0122
Sodium	Na	22.98976928	36	0.2507
Magnesium	Mg	24.3050	98	0.7216
Aluminum	Al	26.9815386	326	2.6646
Sulfur	S	32.065	1	0.0097
Iodine	I	126.90447	288	11.0717

Computing molar mass step by step
First, compute the number of each atom in H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈: H: 98362, He: 3, Li: 67, Be: 12, B: 116, C: 9568, N: 1912, O: 2311, F: 96, Ne: 2, Na: 36, Mg: 98, Al: 326, S: 1, I: 288 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, S: 32.065, I: 126.90447 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₉₈₃₆₂He₃Li₆₇Be₁₂B₁₁₆C₉₅₆₈N₁₉₁₂O₂₃₁₁F₉₆Ne₂Na₃₆Mg₉₈Al₃₂₆SI₂₈₈) = ∑ 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(S) * Weight(S) + Count(I) * Weight(I) = 98362 * 1.00794 + 3 * 4.002602 + 67 * 6.941 + 12 * 9.012182 + 116 * 10.811 + 9568 * 12.0107 + 1912 * 14.0067 + 2311 * 15.9994 + 96 * 18.9984032 + 2 * 20.1797 + 36 * 22.98976928 + 98 * 24.305 + 326 * 26.9815386 + 1 * 32.065 + 288 * 126.90447 = 330106.3344 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₉₅₆₈H₉₈₃₆₂Al₃₂₆B₁₁₆Be₁₂F₉₆He₃I₂₈₈Li₆₇Mg₉₈N₁₉₁₂Na₃₆Ne₂O₂₃₁₁S

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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