O76N7HeAr2BS9H8U92Pu901UO2I2K2Na20LiFMg1000000 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000 is 24544174.4407 g/mol

Convert between O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000 weight and moles

Compound	Moles		Weight, g
O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000

Elemental composition of O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000

Element	Symbol	Atomic weight	Atoms	Mass percent
Oxygen	O	15.9994	78	0.0051
Nitrogen	N	14.0067	7	0.0004
Helium	He	4.002602	1	0.0000
Argon	Ar	39.948	2	0.0003
Boron	B	10.811	1	0.0000
Sulfur	S	32.065	9	0.0012
Hydrogen	H	1.00794	8	0.0000
Uranium	U	238.02891	93	0.0902
Plutonium	Pu	238.049560	901	0.8739
Iodine	I	126.90447	2	0.0010
Potassium	K	39.0983	2	0.0003
Sodium	Na	22.98976928	20	0.0019
Lithium	Li	6.941	1	0.0000
Fluorine	F	18.9984032	1	0.0001
Magnesium	Mg	24.3050	1000000	99.0255

Computing molar mass step by step
First, compute the number of each atom in O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000: O: 78, N: 7, He: 1, Ar: 2, B: 1, S: 9, H: 8, U: 93, Pu: 901, I: 2, K: 2, Na: 20, Li: 1, F: 1, Mg: 1000000 Then, lookup atomic weights for each element in periodic table: O: 15.9994, N: 14.0067, He: 4.002602, Ar: 39.948, B: 10.811, S: 32.065, H: 1.00794, U: 238.02891, Pu: 238.0495599, I: 126.90447, K: 39.0983, Na: 22.98976928, Li: 6.941, F: 18.9984032, Mg: 24.305 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (O₇₆N₇HeAr₂BS₉H₈U₉₂Pu₉₀₁UO₂I₂K₂Na₂₀LiFMg_1000000) = ∑ Count_i * Weight_i = Count(O) * Weight(O) + Count(N) * Weight(N) + Count(He) * Weight(He) + Count(Ar) * Weight(Ar) + Count(B) * Weight(B) + Count(S) * Weight(S) + Count(H) * Weight(H) + Count(U) * Weight(U) + Count(Pu) * Weight(Pu) + Count(I) * Weight(I) + Count(K) * Weight(K) + Count(Na) * Weight(Na) + Count(Li) * Weight(Li) + Count(F) * Weight(F) + Count(Mg) * Weight(Mg) = 78 * 15.9994 + 7 * 14.0067 + 1 * 4.002602 + 2 * 39.948 + 1 * 10.811 + 9 * 32.065 + 8 * 1.00794 + 93 * 238.02891 + 901 * 238.0495599 + 2 * 126.90447 + 2 * 39.0983 + 20 * 22.98976928 + 1 * 6.941 + 1 * 18.9984032 + 1000000 * 24.305 = 24544174.4407 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ar₂BFH₈HeI₂K₂LiMg_1000000N₇Na₂₀O₇₈Pu₉₀₁S₉U₉₃

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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