U2O7N2H2O3C4O3Ir2Fe28Cu10S3Cl5He26O6N6Ra3Si8 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈ is 4806.0006 g/mol

Convert between U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈ weight and moles

Compound	Moles		Weight, g
U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈

Elemental composition of U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈

Element	Symbol	Atomic weight	Atoms	Mass percent
Uranium	U	238.02891	2	9.9055
Oxygen	O	15.9994	19	6.3252
Nitrogen	N	14.0067	8	2.3315
Hydrogen	H	1.00794	2	0.0419
Carbon	C	12.0107	4	0.9996
Iridium	Ir	192.217	2	7.9990
Iron	Fe	55.845	28	32.5356
Copper	Cu	63.546	10	13.2222
Sulfur	S	32.065	3	2.0016
Chlorine	Cl	35.453	5	3.6884
Helium	He	4.002602	26	2.1654
Radium	Ra	226.025410	3	14.1090
Silicon	Si	28.0855	8	4.6751

Computing molar mass step by step
First, compute the number of each atom in U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈: U: 2, O: 19, N: 8, H: 2, C: 4, Ir: 2, Fe: 28, Cu: 10, S: 3, Cl: 5, He: 26, Ra: 3, Si: 8 Then, lookup atomic weights for each element in periodic table: U: 238.02891, O: 15.9994, N: 14.0067, H: 1.00794, C: 12.0107, Ir: 192.217, Fe: 55.845, Cu: 63.546, S: 32.065, Cl: 35.453, He: 4.002602, Ra: 226.0254098, Si: 28.0855 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (U₂O₇N₂H₂O₃C₄O₃Ir₂Fe₂₈Cu₁₀S₃Cl₅He₂₆O₆N₆Ra₃Si₈) = ∑ Count_i * Weight_i = Count(U) * Weight(U) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(H) * Weight(H) + Count(C) * Weight(C) + Count(Ir) * Weight(Ir) + Count(Fe) * Weight(Fe) + Count(Cu) * Weight(Cu) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(He) * Weight(He) + Count(Ra) * Weight(Ra) + Count(Si) * Weight(Si) = 2 * 238.02891 + 19 * 15.9994 + 8 * 14.0067 + 2 * 1.00794 + 4 * 12.0107 + 2 * 192.217 + 28 * 55.845 + 10 * 63.546 + 3 * 32.065 + 5 * 35.453 + 26 * 4.002602 + 3 * 226.0254098 + 8 * 28.0855 = 4806.0006 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₄H₂Cl₅Cu₁₀Fe₂₈He₂₆Ir₂N₈O₁₉Ra₃S₃Si₈U₂

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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