H3Fe2U4AgNaXe9I20Au7Al2As5EsNe4Hg12Ra15TeTaW9Os17B5BeMg9Pt5N molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N is 19323.2706 g/mol

Convert between H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N weight and moles

Compound	Moles		Weight, g
H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N

Elemental composition of H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	3	0.0156
Iron	Fe	55.845	2	0.5780
Uranium	U	238.02891	4	4.9273
Silver	Ag	107.8682	1	0.5582
Sodium	Na	22.98976928	1	0.1190
Xenon	Xe	131.293	9	6.1151
Iodine	I	126.90447	20	13.1349
Gold	Au	196.966569	7	7.1353
Aluminum	Al	26.9815386	2	0.2793
Arsenic	As	74.92160	5	1.9386
Einsteinium	Es	252.08298	1	1.3046
Neon	Ne	20.1797	4	0.4177
Mercury	Hg	200.59	12	12.4569
Radium	Ra	226.025410	15	17.5456
Tellurium	Te	127.60	1	0.6603
Tantalum	Ta	180.94788	1	0.9364
Tungsten	W	183.84	9	8.5625
Osmium	Os	190.23	17	16.7358
Boron	B	10.811	5	0.2797
Beryllium	Be	9.012182	1	0.0466
Magnesium	Mg	24.3050	9	1.1320
Platinum	Pt	195.084	5	5.0479
Nitrogen	N	14.0067	1	0.0725

Computing molar mass step by step
First, compute the number of each atom in H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N: H: 3, Fe: 2, U: 4, Ag: 1, Na: 1, Xe: 9, I: 20, Au: 7, Al: 2, As: 5, Es: 1, Ne: 4, Hg: 12, Ra: 15, Te: 1, Ta: 1, W: 9, Os: 17, B: 5, Be: 1, Mg: 9, Pt: 5, N: 1 Then, lookup atomic weights for each element in periodic table: H: 1.00794, Fe: 55.845, U: 238.02891, Ag: 107.8682, Na: 22.98976928, Xe: 131.293, I: 126.90447, Au: 196.966569, Al: 26.9815386, As: 74.9216, Es: 252.08298, Ne: 20.1797, Hg: 200.59, Ra: 226.0254098, Te: 127.6, Ta: 180.94788, W: 183.84, Os: 190.23, B: 10.811, Be: 9.012182, Mg: 24.305, Pt: 195.084, N: 14.0067 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₃Fe₂U₄AgNaXe₉I₂₀Au₇Al₂As₅EsNe₄Hg₁₂Ra₁₅TeTaW₉Os₁₇B₅BeMg₉Pt₅N) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(Fe) * Weight(Fe) + Count(U) * Weight(U) + Count(Ag) * Weight(Ag) + Count(Na) * Weight(Na) + Count(Xe) * Weight(Xe) + Count(I) * Weight(I) + Count(Au) * Weight(Au) + Count(Al) * Weight(Al) + Count(As) * Weight(As) + Count(Es) * Weight(Es) + Count(Ne) * Weight(Ne) + Count(Hg) * Weight(Hg) + Count(Ra) * Weight(Ra) + Count(Te) * Weight(Te) + Count(Ta) * Weight(Ta) + Count(W) * Weight(W) + Count(Os) * Weight(Os) + Count(B) * Weight(B) + Count(Be) * Weight(Be) + Count(Mg) * Weight(Mg) + Count(Pt) * Weight(Pt) + Count(N) * Weight(N) = 3 * 1.00794 + 2 * 55.845 + 4 * 238.02891 + 1 * 107.8682 + 1 * 22.98976928 + 9 * 131.293 + 20 * 126.90447 + 7 * 196.966569 + 2 * 26.9815386 + 5 * 74.9216 + 1 * 252.08298 + 4 * 20.1797 + 12 * 200.59 + 15 * 226.0254098 + 1 * 127.6 + 1 * 180.94788 + 9 * 183.84 + 17 * 190.23 + 5 * 10.811 + 1 * 9.012182 + 9 * 24.305 + 5 * 195.084 + 1 * 14.0067 = 19323.2706 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is AgAl₂As₅Au₇B₅BeEsFe₂H₃Hg₁₂I₂₀Mg₉NNaNe₄Os₁₇Pt₅Ra₁₅TaTeU₄W₉Xe₉

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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