U132He15Li28Be4B12C44N23O34F33Ne45Na34Mg33Al31Si30P29S28Cl27 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇ is 40785.6221 g/mol

Convert between U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇ weight and moles

Compound	Moles		Weight, g
U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇

Elemental composition of U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇

Element	Symbol	Atomic weight	Atoms	Mass percent
Uranium	U	238.02891	132	77.0365
Helium	He	4.002602	15	0.1472
Lithium	Li	6.941	28	0.4765
Beryllium	Be	9.012182	4	0.0884
Boron	B	10.811	12	0.3181
Carbon	C	12.0107	44	1.2957
Nitrogen	N	14.0067	23	0.7899
Oxygen	O	15.9994	34	1.3338
Fluorine	F	18.9984032	33	1.5372
Neon	Ne	20.1797	45	2.2265
Sodium	Na	22.98976928	34	1.9165
Magnesium	Mg	24.3050	33	1.9665
Aluminum	Al	26.9815386	31	2.0508
Silicon	Si	28.0855	30	2.0658
Phosphorus	P	30.973762	29	2.2023
Sulfur	S	32.065	28	2.2013
Chlorine	Cl	35.453	27	2.3470

Computing molar mass step by step
First, compute the number of each atom in U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇: U: 132, He: 15, Li: 28, Be: 4, B: 12, C: 44, N: 23, O: 34, F: 33, Ne: 45, Na: 34, Mg: 33, Al: 31, Si: 30, P: 29, S: 28, Cl: 27 Then, lookup atomic weights for each element in periodic table: U: 238.02891, 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, S: 32.065, Cl: 35.453 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (U₁₃₂He₁₅Li₂₈Be₄B₁₂C₄₄N₂₃O₃₄F₃₃Ne₄₅Na₃₄Mg₃₃Al₃₁Si₃₀P₂₉S₂₈Cl₂₇) = ∑ Count_i * Weight_i = Count(U) * Weight(U) + 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) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) = 132 * 238.02891 + 15 * 4.002602 + 28 * 6.941 + 4 * 9.012182 + 12 * 10.811 + 44 * 12.0107 + 23 * 14.0067 + 34 * 15.9994 + 33 * 18.9984032 + 45 * 20.1797 + 34 * 22.98976928 + 33 * 24.305 + 31 * 26.9815386 + 30 * 28.0855 + 29 * 30.973762 + 28 * 32.065 + 27 * 35.453 = 40785.6221 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₄₄Al₃₁B₁₂Be₄Cl₂₇F₃₃He₁₅Li₂₈Mg₃₃N₂₃Na₃₄Ne₄₅O₃₄P₂₉S₂₈Si₃₀U₁₃₂

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