H3He2Li5Be3B9C2N3O9F3Ne3Na2Mg3Al7SI3P3S7Cl2Ar4K8Ca12SC4Ti2 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂ is 2735.8222 g/mol

Convert between H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂ weight and moles

Compound	Moles		Weight, g
H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂

Elemental composition of H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	3	0.1105
Helium	He	4.002602	2	0.2926
Lithium	Li	6.941	5	1.2685
Beryllium	Be	9.012182	3	0.9882
Boron	B	10.811	9	3.5565
Carbon	C	12.0107	6	2.6341
Nitrogen	N	14.0067	3	1.5359
Oxygen	O	15.9994	9	5.2633
Fluorine	F	18.9984032	3	2.0833
Neon	Ne	20.1797	3	2.2128
Sodium	Na	22.98976928	2	1.6806
Magnesium	Mg	24.3050	3	2.6652
Aluminum	Al	26.9815386	7	6.9036
Sulfur	S	32.065	9	10.5484
Iodine	I	126.90447	3	13.9159
Phosphorus	P	30.973762	3	3.3965
Chlorine	Cl	35.453	2	2.5918
Argon	Ar	39.948	4	5.8407
Potassium	K	39.0983	8	11.4330
Calcium	Ca	40.078	12	17.5792
Titanium	Ti	47.867	2	3.4993

Computing molar mass step by step
First, compute the number of each atom in H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂: H: 3, He: 2, Li: 5, Be: 3, B: 9, C: 6, N: 3, O: 9, F: 3, Ne: 3, Na: 2, Mg: 3, Al: 7, S: 9, I: 3, P: 3, Cl: 2, Ar: 4, K: 8, Ca: 12, Ti: 2 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, P: 30.973762, Cl: 35.453, Ar: 39.948, K: 39.0983, Ca: 40.078, Ti: 47.867 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₃He₂Li₅Be₃B₉C₂N₃O₉F₃Ne₃Na₂Mg₃Al₇SI₃P₃S₇Cl₂Ar₄K₈Ca₁₂SC₄Ti₂) = ∑ 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) + Count(P) * Weight(P) + Count(Cl) * Weight(Cl) + Count(Ar) * Weight(Ar) + Count(K) * Weight(K) + Count(Ca) * Weight(Ca) + Count(Ti) * Weight(Ti) = 3 * 1.00794 + 2 * 4.002602 + 5 * 6.941 + 3 * 9.012182 + 9 * 10.811 + 6 * 12.0107 + 3 * 14.0067 + 9 * 15.9994 + 3 * 18.9984032 + 3 * 20.1797 + 2 * 22.98976928 + 3 * 24.305 + 7 * 26.9815386 + 9 * 32.065 + 3 * 126.90447 + 3 * 30.973762 + 2 * 35.453 + 4 * 39.948 + 8 * 39.0983 + 12 * 40.078 + 2 * 47.867 = 2735.8222 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₆H₃Al₇Ar₄B₉Be₃Ca₁₂Cl₂F₃He₂I₃K₈Li₅Mg₃N₃Na₂Ne₃O₉P₃S₉Ti₂

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