C276H72O900N4Mg1000Ag1203AsBiSCl5Bh307Re3Th2Au3 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃ is 257566.6603 g/mol

Convert between C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃ weight and moles

Compound	Moles		Weight, g
C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃

Elemental composition of C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃

Element	Symbol	Atomic weight	Atoms	Mass percent
Carbon	C	12.0107	276	1.2870
Hydrogen	H	1.00794	72	0.0282
Oxygen	O	15.9994	900	5.5906
Nitrogen	N	14.0067	4	0.0218
Magnesium	Mg	24.3050	1000	9.4364
Silver	Ag	107.8682	1203	50.3813
Arsenic	As	74.92160	1	0.0291
Bismuth	Bi	208.98040	1	0.0811
Sulfur	S	32.065	1	0.0124
Chlorine	Cl	35.453	5	0.0688
Bohrium	Bh	272.1380	307	32.4368
Rhenium	Re	186.207	3	0.2169
Thorium	Th	232.03806	2	0.1802
Gold	Au	196.966569	3	0.2294

Computing molar mass step by step
First, compute the number of each atom in C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃: C: 276, H: 72, O: 900, N: 4, Mg: 1000, Ag: 1203, As: 1, Bi: 1, S: 1, Cl: 5, Bh: 307, Re: 3, Th: 2, Au: 3 Then, lookup atomic weights for each element in periodic table: C: 12.0107, H: 1.00794, O: 15.9994, N: 14.0067, Mg: 24.305, Ag: 107.8682, As: 74.9216, Bi: 208.9804, S: 32.065, Cl: 35.453, Bh: 272.13803, Re: 186.207, Th: 232.03806, Au: 196.966569 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (C₂₇₆H₇₂O₉₀₀N₄Mg₁₀₀₀Ag₁₂₀₃AsBiSCl₅Bh₃₀₇Re₃Th₂Au₃) = ∑ Count_i * Weight_i = Count(C) * Weight(C) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(Mg) * Weight(Mg) + Count(Ag) * Weight(Ag) + Count(As) * Weight(As) + Count(Bi) * Weight(Bi) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(Bh) * Weight(Bh) + Count(Re) * Weight(Re) + Count(Th) * Weight(Th) + Count(Au) * Weight(Au) = 276 * 12.0107 + 72 * 1.00794 + 900 * 15.9994 + 4 * 14.0067 + 1000 * 24.305 + 1203 * 107.8682 + 1 * 74.9216 + 1 * 208.9804 + 1 * 32.065 + 5 * 35.453 + 307 * 272.13803 + 3 * 186.207 + 2 * 232.03806 + 3 * 196.966569 = 257566.6603 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₂₇₆H₇₂Ag₁₂₀₃AsAu₃Bh₃₀₇BiCl₅Mg₁₀₀₀N₄O₉₀₀Re₃STh₂

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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