NB67W34Fe22U19NP13Zr11Zn8He5H4Ar2K2F2N2O2HO2Ne molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne is 15016.5454 g/mol

Convert between NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne weight and moles

Compound	Moles		Weight, g
NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne

Elemental composition of NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne

Element	Symbol	Atomic weight	Atoms	Mass percent
Nitrogen	N	14.0067	4	0.3731
Boron	B	10.811	67	4.8236
Tungsten	W	183.84	34	41.6245
Iron	Fe	55.845	22	8.1816
Uranium	U	238.02891	19	30.1171
Phosphorus	P	30.973762	13	2.6814
Zirconium	Zr	91.224	11	6.6824
Zinc	Zn	65.38	8	3.4831
Helium	He	4.002602	5	0.1333
Hydrogen	H	1.00794	5	0.0336
Argon	Ar	39.948	2	0.5321
Potassium	K	39.0983	2	0.5207
Fluorine	F	18.9984032	2	0.2530
Oxygen	O	15.9994	4	0.4262
Neon	Ne	20.1797	1	0.1344

Computing molar mass step by step
First, compute the number of each atom in NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne: N: 4, B: 67, W: 34, Fe: 22, U: 19, P: 13, Zr: 11, Zn: 8, He: 5, H: 5, Ar: 2, K: 2, F: 2, O: 4, Ne: 1 Then, lookup atomic weights for each element in periodic table: N: 14.0067, B: 10.811, W: 183.84, Fe: 55.845, U: 238.02891, P: 30.973762, Zr: 91.224, Zn: 65.38, He: 4.002602, H: 1.00794, Ar: 39.948, K: 39.0983, F: 18.9984032, O: 15.9994, Ne: 20.1797 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (NB₆₇W₃₄Fe₂₂U₁₉NP₁₃Zr₁₁Zn₈He₅H₄Ar₂K₂F₂N₂O₂HO₂Ne) = ∑ Count_i * Weight_i = Count(N) * Weight(N) + Count(B) * Weight(B) + Count(W) * Weight(W) + Count(Fe) * Weight(Fe) + Count(U) * Weight(U) + Count(P) * Weight(P) + Count(Zr) * Weight(Zr) + Count(Zn) * Weight(Zn) + Count(He) * Weight(He) + Count(H) * Weight(H) + Count(Ar) * Weight(Ar) + Count(K) * Weight(K) + Count(F) * Weight(F) + Count(O) * Weight(O) + Count(Ne) * Weight(Ne) = 4 * 14.0067 + 67 * 10.811 + 34 * 183.84 + 22 * 55.845 + 19 * 238.02891 + 13 * 30.973762 + 11 * 91.224 + 8 * 65.38 + 5 * 4.002602 + 5 * 1.00794 + 2 * 39.948 + 2 * 39.0983 + 2 * 18.9984032 + 4 * 15.9994 + 1 * 20.1797 = 15016.5454 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ar₂B₆₇F₂Fe₂₂H₅He₅K₂N₄NeO₄P₁₃U₁₉W₃₄Zn₈Zr₁₁

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