O13C9H36P5UXe2Na8CoFe4WCs2Pr2AsHgPdAu23Rh4Sg10He23BaRf3Po7 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇ is 12728.2890 g/mol

Convert between O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇ weight and moles

Compound	Moles		Weight, g
O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇

Elemental composition of O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇

Element	Symbol	Atomic weight	Atoms	Mass percent
Oxygen	O	15.9994	13	1.6341
Carbon	C	12.0107	9	0.8493
Hydrogen	H	1.00794	36	0.2851
Phosphorus	P	30.973762	5	1.2167
Uranium	U	238.02891	1	1.8701
Xenon	Xe	131.293	2	2.0630
Sodium	Na	22.98976928	8	1.4450
Cobalt	Co	58.933195	1	0.4630
Iron	Fe	55.845	4	1.7550
Tungsten	W	183.84	1	1.4443
Cesium	Cs	132.9054519	2	2.0883
Praseodymium	Pr	140.90765	2	2.2141
Arsenic	As	74.92160	1	0.5886
Mercury	Hg	200.59	1	1.5759
Palladium	Pd	106.42	1	0.8361
Gold	Au	196.966569	23	35.5918
Rhodium	Rh	102.90550	4	3.2339
Seaborgium	Sg	271.1335	10	21.3016
Helium	He	4.002602	23	0.7233
Barium	Ba	137.327	1	1.0789
Rutherfordium	Rf	265.1167	3	6.2487
Polonium	Po	208.982430	7	11.4931

Computing molar mass step by step
First, compute the number of each atom in O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇: O: 13, C: 9, H: 36, P: 5, U: 1, Xe: 2, Na: 8, Co: 1, Fe: 4, W: 1, Cs: 2, Pr: 2, As: 1, Hg: 1, Pd: 1, Au: 23, Rh: 4, Sg: 10, He: 23, Ba: 1, Rf: 3, Po: 7 Then, lookup atomic weights for each element in periodic table: O: 15.9994, C: 12.0107, H: 1.00794, P: 30.973762, U: 238.02891, Xe: 131.293, Na: 22.98976928, Co: 58.933195, Fe: 55.845, W: 183.84, Cs: 132.9054519, Pr: 140.90765, As: 74.9216, Hg: 200.59, Pd: 106.42, Au: 196.966569, Rh: 102.9055, Sg: 271.13347, He: 4.002602, Ba: 137.327, Rf: 265.1167, Po: 208.9824304 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (O₁₃C₉H₃₆P₅UXe₂Na₈CoFe₄WCs₂Pr₂AsHgPdAu₂₃Rh₄Sg₁₀He₂₃BaRf₃Po₇) = ∑ Count_i * Weight_i = Count(O) * Weight(O) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(P) * Weight(P) + Count(U) * Weight(U) + Count(Xe) * Weight(Xe) + Count(Na) * Weight(Na) + Count(Co) * Weight(Co) + Count(Fe) * Weight(Fe) + Count(W) * Weight(W) + Count(Cs) * Weight(Cs) + Count(Pr) * Weight(Pr) + Count(As) * Weight(As) + Count(Hg) * Weight(Hg) + Count(Pd) * Weight(Pd) + Count(Au) * Weight(Au) + Count(Rh) * Weight(Rh) + Count(Sg) * Weight(Sg) + Count(He) * Weight(He) + Count(Ba) * Weight(Ba) + Count(Rf) * Weight(Rf) + Count(Po) * Weight(Po) = 13 * 15.9994 + 9 * 12.0107 + 36 * 1.00794 + 5 * 30.973762 + 1 * 238.02891 + 2 * 131.293 + 8 * 22.98976928 + 1 * 58.933195 + 4 * 55.845 + 1 * 183.84 + 2 * 132.9054519 + 2 * 140.90765 + 1 * 74.9216 + 1 * 200.59 + 1 * 106.42 + 23 * 196.966569 + 4 * 102.9055 + 10 * 271.13347 + 23 * 4.002602 + 1 * 137.327 + 3 * 265.1167 + 7 * 208.9824304 = 12728.2890 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₉H₃₆AsAu₂₃BaCoCs₂Fe₄He₂₃HgNa₈O₁₃P₅PdPo₇Pr₂Rf₃Rh₄Sg₁₀UWXe₂

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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