KMnO4Cl5Fe9OHNa12V4Mn32CO2OH87U2H5C6GeBeGaMgFeAgAuHfIKCaPbPF molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF is 4971.5362 g/mol

Convert between KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF weight and moles

Compound	Moles		Weight, g
KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF

Elemental composition of KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF

Element	Symbol	Atomic weight	Atoms	Mass percent
Potassium	K	39.0983	2	1.5729
Manganese	Mn	54.938045	33	36.4667
Oxygen	O	15.9994	8	2.5746
Chlorine	Cl	35.453	5	3.5656
Iron	Fe	55.845	10	11.2329
Hydrogen	H	1.00794	93	1.8855
Sodium	Na	22.98976928	12	5.5491
Vanadium	V	50.9415	4	4.0987
Carbon	C	12.0107	7	1.6911
Uranium	U	238.02891	2	9.5757
Germanium	Ge	72.64	1	1.4611
Beryllium	Be	9.012182	1	0.1813
Gallium	Ga	69.723	1	1.4024
Magnesium	Mg	24.3050	1	0.4889
Silver	Ag	107.8682	1	2.1697
Gold	Au	196.966569	1	3.9619
Hafnium	Hf	178.49	1	3.5902
Iodine	I	126.90447	1	2.5526
Calcium	Ca	40.078	1	0.8061
Lead	Pb	207.2	1	4.1677
Phosphorus	P	30.973762	1	0.6230
Fluorine	F	18.9984032	1	0.3821

Computing molar mass step by step
First, compute the number of each atom in KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF: K: 2, Mn: 33, O: 8, Cl: 5, Fe: 10, H: 93, Na: 12, V: 4, C: 7, U: 2, Ge: 1, Be: 1, Ga: 1, Mg: 1, Ag: 1, Au: 1, Hf: 1, I: 1, Ca: 1, Pb: 1, P: 1, F: 1 Then, lookup atomic weights for each element in periodic table: K: 39.0983, Mn: 54.938045, O: 15.9994, Cl: 35.453, Fe: 55.845, H: 1.00794, Na: 22.98976928, V: 50.9415, C: 12.0107, U: 238.02891, Ge: 72.64, Be: 9.012182, Ga: 69.723, Mg: 24.305, Ag: 107.8682, Au: 196.966569, Hf: 178.49, I: 126.90447, Ca: 40.078, Pb: 207.2, P: 30.973762, F: 18.9984032 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (KMnO₄Cl₅Fe₉OHNa₁₂V₄Mn₃₂CO₂OH₈₇U₂H₅C₆GeBeGaMgFeAgAuHfIKCaPbPF) = ∑ Count_i * Weight_i = Count(K) * Weight(K) + Count(Mn) * Weight(Mn) + Count(O) * Weight(O) + Count(Cl) * Weight(Cl) + Count(Fe) * Weight(Fe) + Count(H) * Weight(H) + Count(Na) * Weight(Na) + Count(V) * Weight(V) + Count(C) * Weight(C) + Count(U) * Weight(U) + Count(Ge) * Weight(Ge) + Count(Be) * Weight(Be) + Count(Ga) * Weight(Ga) + Count(Mg) * Weight(Mg) + Count(Ag) * Weight(Ag) + Count(Au) * Weight(Au) + Count(Hf) * Weight(Hf) + Count(I) * Weight(I) + Count(Ca) * Weight(Ca) + Count(Pb) * Weight(Pb) + Count(P) * Weight(P) + Count(F) * Weight(F) = 2 * 39.0983 + 33 * 54.938045 + 8 * 15.9994 + 5 * 35.453 + 10 * 55.845 + 93 * 1.00794 + 12 * 22.98976928 + 4 * 50.9415 + 7 * 12.0107 + 2 * 238.02891 + 1 * 72.64 + 1 * 9.012182 + 1 * 69.723 + 1 * 24.305 + 1 * 107.8682 + 1 * 196.966569 + 1 * 178.49 + 1 * 126.90447 + 1 * 40.078 + 1 * 207.2 + 1 * 30.973762 + 1 * 18.9984032 = 4971.5362 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₇H₉₃AgAuBeCaCl₅FFe₁₀GaGeHfIK₂MgMn₃₃Na₁₂O₈PPbU₂V₄

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, 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