MgBr2O3N12C34P17S26Fe2Au12K6I18U5Zn2W89 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉ is 24845.6230 g/mol

Convert between MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉ weight and moles

Compound	Moles		Weight, g
MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉

Elemental composition of MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉

Element	Symbol	Atomic weight	Atoms	Mass percent
Magnesium	Mg	24.3050	1	0.0978
Bromine	Br	79.904	2	0.6432
Oxygen	O	15.9994	3	0.1932
Nitrogen	N	14.0067	12	0.6765
Carbon	C	12.0107	34	1.6436
Phosphorus	P	30.973762	17	2.1193
Sulfur	S	32.065	26	3.3555
Iron	Fe	55.845	2	0.4495
Gold	Au	196.966569	12	9.5131
Potassium	K	39.0983	6	0.9442
Iodine	I	126.90447	18	9.1939
Uranium	U	238.02891	5	4.7902
Zinc	Zn	65.38	2	0.5263
Tungsten	W	183.84	89	65.8537

Computing molar mass step by step
First, compute the number of each atom in MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉: Mg: 1, Br: 2, O: 3, N: 12, C: 34, P: 17, S: 26, Fe: 2, Au: 12, K: 6, I: 18, U: 5, Zn: 2, W: 89 Then, lookup atomic weights for each element in periodic table: Mg: 24.305, Br: 79.904, O: 15.9994, N: 14.0067, C: 12.0107, P: 30.973762, S: 32.065, Fe: 55.845, Au: 196.966569, K: 39.0983, I: 126.90447, U: 238.02891, Zn: 65.38, W: 183.84 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (MgBr₂O₃N₁₂C₃₄P₁₇S₂₆Fe₂Au₁₂K₆I₁₈U₅Zn₂W₈₉) = ∑ Count_i * Weight_i = Count(Mg) * Weight(Mg) + Count(Br) * Weight(Br) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(C) * Weight(C) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(Fe) * Weight(Fe) + Count(Au) * Weight(Au) + Count(K) * Weight(K) + Count(I) * Weight(I) + Count(U) * Weight(U) + Count(Zn) * Weight(Zn) + Count(W) * Weight(W) = 1 * 24.305 + 2 * 79.904 + 3 * 15.9994 + 12 * 14.0067 + 34 * 12.0107 + 17 * 30.973762 + 26 * 32.065 + 2 * 55.845 + 12 * 196.966569 + 6 * 39.0983 + 18 * 126.90447 + 5 * 238.02891 + 2 * 65.38 + 89 * 183.84 = 24845.6230 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃₄Au₁₂Br₂Fe₂I₁₈K₆MgN₁₂O₃P₁₇S₂₆U₅W₈₉Zn₂

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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