C55H72O5Mg2Na9Cu2Ca8Co9F15Ra84Zn98Cl99H2O2Ar98Ne72K54V12 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂ is 39359.4506 g/mol

Convert between C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂ weight and moles

Compound	Moles		Weight, g
C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂

Elemental composition of C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Carbon	C	12.0107	55	1.6783
Hydrogen	H	1.00794	74	0.1895
Oxygen	O	15.9994	7	0.2845
Magnesium	Mg	24.3050	2	0.1235
Sodium	Na	22.98976928	9	0.5257
Copper	Cu	63.546	2	0.3229
Calcium	Ca	40.078	8	0.8146
Cobalt	Co	58.933195	9	1.3476
Fluorine	F	18.9984032	15	0.7240
Radium	Ra	226.025410	84	48.2378
Zinc	Zn	65.38	98	16.2788
Chlorine	Cl	35.453	99	8.9174
Argon	Ar	39.948	98	9.9465
Neon	Ne	20.1797	72	3.6915
Potassium	K	39.0983	54	5.3642
Vanadium	V	50.9415	12	1.5531

Computing molar mass step by step
First, compute the number of each atom in C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂: C: 55, H: 74, O: 7, Mg: 2, Na: 9, Cu: 2, Ca: 8, Co: 9, F: 15, Ra: 84, Zn: 98, Cl: 99, Ar: 98, Ne: 72, K: 54, V: 12 Then, lookup atomic weights for each element in periodic table: C: 12.0107, H: 1.00794, O: 15.9994, Mg: 24.305, Na: 22.98976928, Cu: 63.546, Ca: 40.078, Co: 58.933195, F: 18.9984032, Ra: 226.0254098, Zn: 65.38, Cl: 35.453, Ar: 39.948, Ne: 20.1797, K: 39.0983, V: 50.9415 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (C₅₅H₇₂O₅Mg₂Na₉Cu₂Ca₈Co₉F₁₅Ra₈₄Zn₉₈Cl₉₉H₂O₂Ar₉₈Ne₇₂K₅₄V₁₂) = ∑ Count_i * Weight_i = Count(C) * Weight(C) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Mg) * Weight(Mg) + Count(Na) * Weight(Na) + Count(Cu) * Weight(Cu) + Count(Ca) * Weight(Ca) + Count(Co) * Weight(Co) + Count(F) * Weight(F) + Count(Ra) * Weight(Ra) + Count(Zn) * Weight(Zn) + Count(Cl) * Weight(Cl) + Count(Ar) * Weight(Ar) + Count(Ne) * Weight(Ne) + Count(K) * Weight(K) + Count(V) * Weight(V) = 55 * 12.0107 + 74 * 1.00794 + 7 * 15.9994 + 2 * 24.305 + 9 * 22.98976928 + 2 * 63.546 + 8 * 40.078 + 9 * 58.933195 + 15 * 18.9984032 + 84 * 226.0254098 + 98 * 65.38 + 99 * 35.453 + 98 * 39.948 + 72 * 20.1797 + 54 * 39.0983 + 12 * 50.9415 = 39359.4506 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₅₅H₇₄Ar₉₈Ca₈Cl₉₉Co₉Cu₂F₁₅K₅₄Mg₂Na₉Ne₇₂O₇Ra₈₄V₁₂Zn₉₈

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

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