KNO3MgS04MnClO2ClO2ZnCl2MoFeO4SNH4NH4SO4K3PO4NO3NO3CuNaCl molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl is 1418.0678 g/mol

Convert between KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl weight and moles

Compound	Moles		Weight, g
KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl

Elemental composition of KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl

Element	Symbol	Atomic weight	Atoms	Mass percent
Potassium	K	39.0983	4	11.0286
Nitrogen	N	14.0067	5	4.9387
Oxygen	O	15.9994	25	28.2063
Magnesium	Mg	24.3050	1	1.7140
Sulfur	S	32.065	6	13.5671
Manganese	Mn	54.938045	1	3.8741
Chlorine	Cl	35.453	5	12.5005
Zinc	Zn	65.38	1	4.6105
Molybdenum	Mo	95.96	1	6.7670
Iron	Fe	55.845	1	3.9381
Hydrogen	H	1.00794	8	0.5686
Phosphorus	P	30.973762	1	2.1842
Copper	Cu	63.546	1	4.4812
Sodium	Na	22.98976928	1	1.6212

Computing molar mass step by step
First, compute the number of each atom in KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl: K: 4, N: 5, O: 25, Mg: 1, S: 6, Mn: 1, Cl: 5, Zn: 1, Mo: 1, Fe: 1, H: 8, P: 1, Cu: 1, Na: 1 Then, lookup atomic weights for each element in periodic table: K: 39.0983, N: 14.0067, O: 15.9994, Mg: 24.305, S: 32.065, Mn: 54.938045, Cl: 35.453, Zn: 65.38, Mo: 95.96, Fe: 55.845, H: 1.00794, P: 30.973762, Cu: 63.546, Na: 22.98976928 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (KNO₃MgS₀₄MnClO₂ClO₂ZnCl₂MoFeO₄SNH₄NH₄SO₄K₃PO₄NO₃NO₃CuNaCl) = ∑ Count_i * Weight_i = Count(K) * Weight(K) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Mg) * Weight(Mg) + Count(S) * Weight(S) + Count(Mn) * Weight(Mn) + Count(Cl) * Weight(Cl) + Count(Zn) * Weight(Zn) + Count(Mo) * Weight(Mo) + Count(Fe) * Weight(Fe) + Count(H) * Weight(H) + Count(P) * Weight(P) + Count(Cu) * Weight(Cu) + Count(Na) * Weight(Na) = 4 * 39.0983 + 5 * 14.0067 + 25 * 15.9994 + 1 * 24.305 + 6 * 32.065 + 1 * 54.938045 + 5 * 35.453 + 1 * 65.38 + 1 * 95.96 + 1 * 55.845 + 8 * 1.00794 + 1 * 30.973762 + 1 * 63.546 + 1 * 22.98976928 = 1418.0678 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Cl₅CuFeH₈K₄MgMnMoN₅NaO₂₅PS₆Zn

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

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