Br27O5C35H7N40PbH500LrBhAg12H50AtRnRaReOsRb3WHfYFrU5 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅ is 8959.5798 g/mol

Convert between Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅ weight and moles

Compound	Moles		Weight, g
Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅

Elemental composition of Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅

Element	Symbol	Atomic weight	Atoms	Mass percent
Bromine	Br	79.904	27	24.0793
Oxygen	O	15.9994	5	0.8929
Carbon	C	12.0107	35	4.6919
Hydrogen	H	1.00794	557	6.2662
Nitrogen	N	14.0067	40	6.2533
Lead	Pb	207.2	1	2.3126
Lawrencium	Lr	262.1096	1	2.9255
Bohrium	Bh	272.1380	1	3.0374
Silver	Ag	107.8682	12	14.4473
Astatine	At	209.987148	1	2.3437
Radon	Rn	210.990601	1	2.3549
Radium	Ra	226.025410	1	2.5227
Rhenium	Re	186.207	1	2.0783
Osmium	Os	190.23	1	2.1232
Rubidium	Rb	85.4678	3	2.8618
Tungsten	W	183.84	1	2.0519
Hafnium	Hf	178.49	1	1.9922
Yttrium	Y	88.90585	1	0.9923
Francium	Fr	223.019736	1	2.4892
Uranium	U	238.02891	5	13.2835

Computing molar mass step by step
First, compute the number of each atom in Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅: 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: 5 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 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Br₂₇O₅C₃₅H₇N₄₀PbH₅₀₀LrBhAg₁₂H₅₀AtRnRaReOsRb₃WHfYFrU₅) = ∑ 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) = 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 + 5 * 238.02891 = 8959.5798 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃₅H₅₅₇Ag₁₂AtBhBr₂₇FrHfLrN₄₀O₅OsPbRaRb₃ReRnU₅WY

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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