Br27O5C35H7N40PbH500LrBhAg12H50AtRnRaReOsRb3WHfYFrU9PaThLuYb molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb is 10722.7902 g/mol

Convert between Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb weight and moles

Compound	Moles		Weight, g
Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb

Elemental composition of Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb

Element	Symbol	Atomic weight	Atoms	Mass percent
Bromine	Br	79.904	27	20.1198
Oxygen	O	15.9994	5	0.7460
Carbon	C	12.0107	35	3.9204
Hydrogen	H	1.00794	557	5.2358
Nitrogen	N	14.0067	40	5.2250
Lead	Pb	207.2	1	1.9323
Lawrencium	Lr	262.1096	1	2.4444
Bohrium	Bh	272.1380	1	2.5379
Silver	Ag	107.8682	12	12.0717
Astatine	At	209.987148	1	1.9583
Radon	Rn	210.990601	1	1.9677
Radium	Ra	226.025410	1	2.1079
Rhenium	Re	186.207	1	1.7366
Osmium	Os	190.23	1	1.7741
Rubidium	Rb	85.4678	3	2.3912
Tungsten	W	183.84	1	1.7145
Hafnium	Hf	178.49	1	1.6646
Yttrium	Y	88.90585	1	0.8291
Francium	Fr	223.019736	1	2.0799
Uranium	U	238.02891	9	19.9786
Protactinium	Pa	231.03588	1	2.1546
Thorium	Th	232.03806	1	2.1640
Lutetium	Lu	174.9668	1	1.6317
Ytterbium	Yb	173.054	1	1.6139

Computing molar mass step by step
First, compute the number of each atom in Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb: Br: 27, O: 5, C: 35, H: 557, N: 40, Pb: 1, Lr: 1, Bh: 1, Ag: 12, At: 1, Rn: 1, Ra: 1, Re: 1, Os: 1, Rb: 3, W: 1, Hf: 1, Y: 1, Fr: 1, U: 9, Pa: 1, Th: 1, Lu: 1, Yb: 1 Then, lookup atomic weights for each element in periodic table: Br: 79.904, O: 15.9994, C: 12.0107, H: 1.00794, N: 14.0067, Pb: 207.2, Lr: 262.10963, Bh: 272.13803, Ag: 107.8682, At: 209.987148, Rn: 210.990601, Ra: 226.0254098, Re: 186.207, Os: 190.23, Rb: 85.4678, W: 183.84, Hf: 178.49, Y: 88.90585, Fr: 223.0197359, U: 238.02891, Pa: 231.03588, Th: 232.03806, Lu: 174.9668, Yb: 173.054 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₉PaThLuYb) = ∑ Count_i * Weight_i = Count(Br) * Weight(Br) + Count(O) * Weight(O) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(N) * Weight(N) + Count(Pb) * Weight(Pb) + Count(Lr) * Weight(Lr) + Count(Bh) * Weight(Bh) + Count(Ag) * Weight(Ag) + Count(At) * Weight(At) + Count(Rn) * Weight(Rn) + Count(Ra) * Weight(Ra) + Count(Re) * Weight(Re) + Count(Os) * Weight(Os) + Count(Rb) * Weight(Rb) + Count(W) * Weight(W) + Count(Hf) * Weight(Hf) + Count(Y) * Weight(Y) + Count(Fr) * Weight(Fr) + Count(U) * Weight(U) + Count(Pa) * Weight(Pa) + Count(Th) * Weight(Th) + Count(Lu) * Weight(Lu) + Count(Yb) * Weight(Yb) = 27 * 79.904 + 5 * 15.9994 + 35 * 12.0107 + 557 * 1.00794 + 40 * 14.0067 + 1 * 207.2 + 1 * 262.10963 + 1 * 272.13803 + 12 * 107.8682 + 1 * 209.987148 + 1 * 210.990601 + 1 * 226.0254098 + 1 * 186.207 + 1 * 190.23 + 3 * 85.4678 + 1 * 183.84 + 1 * 178.49 + 1 * 88.90585 + 1 * 223.0197359 + 9 * 238.02891 + 1 * 231.03588 + 1 * 232.03806 + 1 * 174.9668 + 1 * 173.054 = 10722.7902 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃₅H₅₅₇Ag₁₂AtBhBr₂₇FrHfLrLuN₄₀O₅OsPaPbRaRb₃ReRnThU₉WYYb

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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