C100H202O99S87Cl3Pb800U20He3Be9Mg8Os50Al16Lr12V12Cr12 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂ is 191016.5355 g/mol

Convert between C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂ weight and moles

Compound	Moles		Weight, g
C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂

Elemental composition of C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Carbon	C	12.0107	100	0.6288
Hydrogen	H	1.00794	202	0.1066
Oxygen	O	15.9994	99	0.8292
Sulfur	S	32.065	87	1.4604
Chlorine	Cl	35.453	3	0.0557
Lead	Pb	207.2	800	86.7778
Uranium	U	238.02891	20	2.4922
Helium	He	4.002602	3	0.0063
Beryllium	Be	9.012182	9	0.0425
Magnesium	Mg	24.3050	8	0.1018
Osmium	Os	190.23	50	4.9794
Aluminum	Al	26.9815386	16	0.2260
Lawrencium	Lr	262.1096	12	1.6466
Vanadium	V	50.9415	12	0.3200
Chromium	Cr	51.9961	12	0.3266

Computing molar mass step by step
First, compute the number of each atom in C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂: C: 100, H: 202, O: 99, S: 87, Cl: 3, Pb: 800, U: 20, He: 3, Be: 9, Mg: 8, Os: 50, Al: 16, Lr: 12, V: 12, Cr: 12 Then, lookup atomic weights for each element in periodic table: C: 12.0107, H: 1.00794, O: 15.9994, S: 32.065, Cl: 35.453, Pb: 207.2, U: 238.02891, He: 4.002602, Be: 9.012182, Mg: 24.305, Os: 190.23, Al: 26.9815386, Lr: 262.10963, V: 50.9415, Cr: 51.9961 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (C₁₀₀H₂₀₂O₉₉S₈₇Cl₃Pb₈₀₀U₂₀He₃Be₉Mg₈Os₅₀Al₁₆Lr₁₂V₁₂Cr₁₂) = ∑ Count_i * Weight_i = Count(C) * Weight(C) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(Pb) * Weight(Pb) + Count(U) * Weight(U) + Count(He) * Weight(He) + Count(Be) * Weight(Be) + Count(Mg) * Weight(Mg) + Count(Os) * Weight(Os) + Count(Al) * Weight(Al) + Count(Lr) * Weight(Lr) + Count(V) * Weight(V) + Count(Cr) * Weight(Cr) = 100 * 12.0107 + 202 * 1.00794 + 99 * 15.9994 + 87 * 32.065 + 3 * 35.453 + 800 * 207.2 + 20 * 238.02891 + 3 * 4.002602 + 9 * 9.012182 + 8 * 24.305 + 50 * 190.23 + 16 * 26.9815386 + 12 * 262.10963 + 12 * 50.9415 + 12 * 51.9961 = 191016.5355 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₁₀₀H₂₀₂Al₁₆Be₉Cl₃Cr₁₂He₃Lr₁₂Mg₈O₉₉Os₅₀Pb₈₀₀S₈₇U₂₀V₁₂

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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