H99He25Li14Be11B9C8N7O6F5Ne5Na4Mg4Al4Si3P3 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃ is 1453.7605 g/mol

Convert between H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃ weight and moles

Compound	Moles		Weight, g
H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃

Elemental composition of H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	99	6.8640
Helium	He	4.002602	25	6.8832
Lithium	Li	6.941	14	6.6843
Beryllium	Be	9.012182	11	6.8191
Boron	B	10.811	9	6.6929
Carbon	C	12.0107	8	6.6095
Nitrogen	N	14.0067	7	6.7444
Oxygen	O	15.9994	6	6.6033
Fluorine	F	18.9984032	5	6.5342
Neon	Ne	20.1797	5	6.9405
Sodium	Na	22.98976928	4	6.3256
Magnesium	Mg	24.3050	4	6.6875
Aluminum	Al	26.9815386	4	7.4239
Silicon	Si	28.0855	3	5.7958
Phosphorus	P	30.973762	3	6.3918

Computing molar mass step by step
First, compute the number of each atom in H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃: H: 99, He: 25, Li: 14, Be: 11, B: 9, C: 8, N: 7, O: 6, F: 5, Ne: 5, Na: 4, Mg: 4, Al: 4, Si: 3, P: 3 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, Si: 28.0855, P: 30.973762 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₉₉He₂₅Li₁₄Be₁₁B₉C₈N₇O₆F₅Ne₅Na₄Mg₄Al₄Si₃P₃) = ∑ 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(Si) * Weight(Si) + Count(P) * Weight(P) = 99 * 1.00794 + 25 * 4.002602 + 14 * 6.941 + 11 * 9.012182 + 9 * 10.811 + 8 * 12.0107 + 7 * 14.0067 + 6 * 15.9994 + 5 * 18.9984032 + 5 * 20.1797 + 4 * 22.98976928 + 4 * 24.305 + 4 * 26.9815386 + 3 * 28.0855 + 3 * 30.973762 = 1453.7605 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₈H₉₉Al₄B₉Be₁₁F₅He₂₅Li₁₄Mg₄N₇Na₄Ne₅O₆P₃Si₃

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