H1He2Li3Be4B5C6N7O8F9Ne1Na2Mg3Al3S4K5 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅ is 1132.8022 g/mol

Convert between H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅ weight and moles

Compound	Moles		Weight, g
H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅

Elemental composition of H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	1	0.0890
Helium	He	4.002602	2	0.7067
Lithium	Li	6.941	3	1.8382
Beryllium	Be	9.012182	4	3.1823
Boron	B	10.811	5	4.7718
Carbon	C	12.0107	6	6.3616
Nitrogen	N	14.0067	7	8.6553
Oxygen	O	15.9994	8	11.2990
Fluorine	F	18.9984032	9	15.0940
Neon	Ne	20.1797	1	1.7814
Sodium	Na	22.98976928	2	4.0589
Magnesium	Mg	24.3050	3	6.4367
Aluminum	Al	26.9815386	3	7.1455
Sulfur	S	32.065	4	11.3224
Potassium	K	39.0983	5	17.2573

Computing molar mass step by step
First, compute the number of each atom in H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅: H: 1, He: 2, Li: 3, Be: 4, B: 5, C: 6, N: 7, O: 8, F: 9, Ne: 1, Na: 2, Mg: 3, Al: 3, S: 4, K: 5 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, K: 39.0983 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁He₂Li₃Be₄B₅C₆N₇O₈F₉Ne₁Na₂Mg₃Al₃S₄K₅) = ∑ 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(K) * Weight(K) = 1 * 1.00794 + 2 * 4.002602 + 3 * 6.941 + 4 * 9.012182 + 5 * 10.811 + 6 * 12.0107 + 7 * 14.0067 + 8 * 15.9994 + 9 * 18.9984032 + 1 * 20.1797 + 2 * 22.98976928 + 3 * 24.305 + 3 * 26.9815386 + 4 * 32.065 + 5 * 39.0983 = 1132.8022 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₆HAl₃B₅Be₄F₉He₂K₅Li₃Mg₃N₇Na₂NeO₈S₄

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

Please let us know how we can improve this web app.

How to cite?

Choose languageDeutschEnglishEspañol Français Italiano Nederlands Polski Português Русский 中文日本語 한국어