Na2Mg2Al2H2He2Li2Be2B2C2N2O2F2Ne2Xe2 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂ is 637.0779 g/mol

Convert between Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂ weight and moles

Compound	Moles		Weight, g
Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂

Elemental composition of Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Sodium	Na	22.98976928	2	7.2173
Magnesium	Mg	24.3050	2	7.6302
Aluminum	Al	26.9815386	2	8.4704
Hydrogen	H	1.00794	2	0.3164
Helium	He	4.002602	2	1.2566
Lithium	Li	6.941	2	2.1790
Beryllium	Be	9.012182	2	2.8292
Boron	B	10.811	2	3.3939
Carbon	C	12.0107	2	3.7706
Nitrogen	N	14.0067	2	4.3972
Oxygen	O	15.9994	2	5.0227
Fluorine	F	18.9984032	2	5.9642
Neon	Ne	20.1797	2	6.3351
Xenon	Xe	131.293	2	41.2173

Computing molar mass step by step
First, compute the number of each atom in Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂: Na: 2, Mg: 2, Al: 2, H: 2, He: 2, Li: 2, Be: 2, B: 2, C: 2, N: 2, O: 2, F: 2, Ne: 2, Xe: 2 Then, lookup atomic weights for each element in periodic table: Na: 22.98976928, Mg: 24.305, Al: 26.9815386, 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, Xe: 131.293 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Na₂Mg₂Al₂H₂He₂Li₂Be₂B₂C₂N₂O₂F₂Ne₂Xe₂) = ∑ Count_i * Weight_i = Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(Al) * Weight(Al) + 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(Xe) * Weight(Xe) = 2 * 22.98976928 + 2 * 24.305 + 2 * 26.9815386 + 2 * 1.00794 + 2 * 4.002602 + 2 * 6.941 + 2 * 9.012182 + 2 * 10.811 + 2 * 12.0107 + 2 * 14.0067 + 2 * 15.9994 + 2 * 18.9984032 + 2 * 20.1797 + 2 * 131.293 = 637.0779 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₂H₂Al₂B₂Be₂F₂He₂Li₂Mg₂N₂Na₂Ne₂O₂Xe₂

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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