CoMo3Se4Cr7F13Mn13I14Cu76Zn2110Fe2680Si38600Mg40000Cl127000 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀ is 6855041.6583 g/mol

Convert between CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀ weight and moles

Compound	Moles		Weight, g
CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀

Elemental composition of CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Cobalt	Co	58.933195	1	0.0009
Molybdenum	Mo	95.96	3	0.0042
Selenium	Se	78.96	4	0.0046
Chromium	Cr	51.9961	7	0.0053
Fluorine	F	18.9984032	13	0.0036
Manganese	Mn	54.938045	13	0.0104
Iodine	I	126.90447	14	0.0259
Copper	Cu	63.546	76	0.0705
Zinc	Zn	65.38	2110	2.0124
Iron	Fe	55.845	2680	2.1833
Silicon	Si	28.0855	38600	15.8146
Magnesium	Mg	24.3050	40000	14.1823
Chlorine	Cl	35.453	127000	65.6820

Computing molar mass step by step
First, compute the number of each atom in CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀: Co: 1, Mo: 3, Se: 4, Cr: 7, F: 13, Mn: 13, I: 14, Cu: 76, Zn: 2110, Fe: 2680, Si: 38600, Mg: 40000, Cl: 127000 Then, lookup atomic weights for each element in periodic table: Co: 58.933195, Mo: 95.96, Se: 78.96, Cr: 51.9961, F: 18.9984032, Mn: 54.938045, I: 126.90447, Cu: 63.546, Zn: 65.38, Fe: 55.845, Si: 28.0855, Mg: 24.305, Cl: 35.453 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (CoMo₃Se₄Cr₇F₁₃Mn₁₃I₁₄Cu₇₆Zn₂₁₁₀Fe₂₆₈₀Si₃₈₆₀₀Mg₄₀₀₀₀Cl₁₂₇₀₀₀) = ∑ Count_i * Weight_i = Count(Co) * Weight(Co) + Count(Mo) * Weight(Mo) + Count(Se) * Weight(Se) + Count(Cr) * Weight(Cr) + Count(F) * Weight(F) + Count(Mn) * Weight(Mn) + Count(I) * Weight(I) + Count(Cu) * Weight(Cu) + Count(Zn) * Weight(Zn) + Count(Fe) * Weight(Fe) + Count(Si) * Weight(Si) + Count(Mg) * Weight(Mg) + Count(Cl) * Weight(Cl) = 1 * 58.933195 + 3 * 95.96 + 4 * 78.96 + 7 * 51.9961 + 13 * 18.9984032 + 13 * 54.938045 + 14 * 126.90447 + 76 * 63.546 + 2110 * 65.38 + 2680 * 55.845 + 38600 * 28.0855 + 40000 * 24.305 + 127000 * 35.453 = 6855041.6583 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Cl₁₂₇₀₀₀CoCr₇Cu₇₆F₁₃Fe₂₆₈₀I₁₄Mg₄₀₀₀₀Mn₁₃Mo₃Se₄Si₃₈₆₀₀Zn₂₁₁₀

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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