H2O8NI56C34Fe37O51Ca20Ra3Xe45Ne83He4Kr83Ar53 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃ is 28692.4910 g/mol

Convert between H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃ weight and moles

Compound	Moles		Weight, g
H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃

Elemental composition of H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	2	0.0070
Oxygen	O	15.9994	59	3.2899
Nitrogen	N	14.0067	1	0.0488
Iodine	I	126.90447	56	24.7683
Carbon	C	12.0107	34	1.4232
Iron	Fe	55.845	37	7.2014
Calcium	Ca	40.078	20	2.7936
Radium	Ra	226.025410	3	2.3633
Xenon	Xe	131.293	45	20.5914
Neon	Ne	20.1797	83	5.8375
Helium	He	4.002602	4	0.0558
Krypton	Kr	83.798	83	24.2406
Argon	Ar	39.948	53	7.3791

Computing molar mass step by step
First, compute the number of each atom in H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃: H: 2, O: 59, N: 1, I: 56, C: 34, Fe: 37, Ca: 20, Ra: 3, Xe: 45, Ne: 83, He: 4, Kr: 83, Ar: 53 Then, lookup atomic weights for each element in periodic table: H: 1.00794, O: 15.9994, N: 14.0067, I: 126.90447, C: 12.0107, Fe: 55.845, Ca: 40.078, Ra: 226.0254098, Xe: 131.293, Ne: 20.1797, He: 4.002602, Kr: 83.798, Ar: 39.948 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₂O₈NI₅₆C₃₄Fe₃₇O₅₁Ca₂₀Ra₃Xe₄₅Ne₈₃He₄Kr₈₃Ar₅₃) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(I) * Weight(I) + Count(C) * Weight(C) + Count(Fe) * Weight(Fe) + Count(Ca) * Weight(Ca) + Count(Ra) * Weight(Ra) + Count(Xe) * Weight(Xe) + Count(Ne) * Weight(Ne) + Count(He) * Weight(He) + Count(Kr) * Weight(Kr) + Count(Ar) * Weight(Ar) = 2 * 1.00794 + 59 * 15.9994 + 1 * 14.0067 + 56 * 126.90447 + 34 * 12.0107 + 37 * 55.845 + 20 * 40.078 + 3 * 226.0254098 + 45 * 131.293 + 83 * 20.1797 + 4 * 4.002602 + 83 * 83.798 + 53 * 39.948 = 28692.4910 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃₄H₂Ar₅₃Ca₂₀Fe₃₇He₄I₅₆Kr₈₃NNe₈₃O₅₉Ra₃Xe₄₅

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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