H83D82He81Li80Be79B78C77N76O75F74Ne73Na72Mg71 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁ is 12132.7329 g/mol

Convert between H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁ weight and moles

Compound	Moles		Weight, g
H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁

Elemental composition of H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	83	0.6895
Helium	He	4.002602	81	2.6722
Lithium	Li	6.941	80	4.5767
Beryllium	Be	9.012182	79	5.8681
Boron	B	10.811	78	6.9503
Carbon	C	12.0107	77	7.6226
Nitrogen	N	14.0067	76	8.7739
Oxygen	O	15.9994	75	9.8902
Fluorine	F	18.9984032	74	11.5875
Neon	Ne	20.1797	73	12.1417
Sodium	Na	22.98976928	72	13.6430
Magnesium	Mg	24.3050	71	14.2231
Hydrogen	D	2.0141017778	82	1.3612

Computing molar mass step by step
First, compute the number of each atom in H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁: H: 83, He: 81, Li: 80, Be: 79, B: 78, C: 77, N: 76, O: 75, F: 74, Ne: 73, Na: 72, Mg: 71, D: 82 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, D: 2.0141017778 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₈₃D₈₂He₈₁Li₈₀Be₇₉B₇₈C₇₇N₇₆O₇₅F₇₄Ne₇₃Na₇₂Mg₇₁) = ∑ 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(D) * Weight(D) = 83 * 1.00794 + 81 * 4.002602 + 80 * 6.941 + 79 * 9.012182 + 78 * 10.811 + 77 * 12.0107 + 76 * 14.0067 + 75 * 15.9994 + 74 * 18.9984032 + 73 * 20.1797 + 72 * 22.98976928 + 71 * 24.305 + 82 * 2.0141017778 = 12132.7329 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₇₇H₈₃B₇₈Be₇₉F₇₄D₈₂He₈₁Li₈₀Mg₇₁N₇₆Na₇₂Ne₇₃O₇₅

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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