H2N2C2O2Mg2Cl2Mn2K2B2P2Zn2LiNaRbCsFrDbSg34Nb67Th78Uuo2463 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃ is 34889.6510 g/mol

Convert between H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃ weight and moles

Compound	Moles		Weight, g
H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃

Elemental composition of H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	2	0.0058
Nitrogen	N	14.0067	2	0.0803
Carbon	C	12.0107	2	0.0688
Oxygen	O	15.9994	2	0.0917
Magnesium	Mg	24.3050	2	0.1393
Chlorine	Cl	35.453	2	0.2032
Manganese	Mn	54.938045	2	0.3149
Potassium	K	39.0983	2	0.2241
Boron	B	10.811	2	0.0620
Phosphorus	P	30.973762	2	0.1776
Zinc	Zn	65.38	2	0.3748
Lithium	Li	6.941	1	0.0199
Sodium	Na	22.98976928	1	0.0659
Rubidium	Rb	85.4678	1	0.2450
Cesium	Cs	132.9054519	1	0.3809
Francium	Fr	223.019736	1	0.6392
Dubnium	Db	268.1255	1	0.7685
Seaborgium	Sg	271.1335	34	26.4220
Niobium	Nb	92.90638	67	17.8412
Thorium	Th	232.03806	78	51.8749
Oganesson	Uuo	0.0000000	2463	0.0000

Computing molar mass step by step
First, compute the number of each atom in H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃: H: 2, N: 2, C: 2, O: 2, Mg: 2, Cl: 2, Mn: 2, K: 2, B: 2, P: 2, Zn: 2, Li: 1, Na: 1, Rb: 1, Cs: 1, Fr: 1, Db: 1, Sg: 34, Nb: 67, Th: 78, Uuo: 2463 Then, lookup atomic weights for each element in periodic table: H: 1.00794, N: 14.0067, C: 12.0107, O: 15.9994, Mg: 24.305, Cl: 35.453, Mn: 54.938045, K: 39.0983, B: 10.811, P: 30.973762, Zn: 65.38, Li: 6.941, Na: 22.98976928, Rb: 85.4678, Cs: 132.9054519, Fr: 223.0197359, Db: 268.12545, Sg: 271.13347, Nb: 92.90638, Th: 232.03806, Uuo: 0 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₂N₂C₂O₂Mg₂Cl₂Mn₂K₂B₂P₂Zn₂LiNaRbCsFrDbSg₃₄Nb₆₇Th₇₈Uuo₂₄₆₃) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(N) * Weight(N) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(Mg) * Weight(Mg) + Count(Cl) * Weight(Cl) + Count(Mn) * Weight(Mn) + Count(K) * Weight(K) + Count(B) * Weight(B) + Count(P) * Weight(P) + Count(Zn) * Weight(Zn) + Count(Li) * Weight(Li) + Count(Na) * Weight(Na) + Count(Rb) * Weight(Rb) + Count(Cs) * Weight(Cs) + Count(Fr) * Weight(Fr) + Count(Db) * Weight(Db) + Count(Sg) * Weight(Sg) + Count(Nb) * Weight(Nb) + Count(Th) * Weight(Th) + Count(Uuo) * Weight(Uuo) = 2 * 1.00794 + 2 * 14.0067 + 2 * 12.0107 + 2 * 15.9994 + 2 * 24.305 + 2 * 35.453 + 2 * 54.938045 + 2 * 39.0983 + 2 * 10.811 + 2 * 30.973762 + 2 * 65.38 + 1 * 6.941 + 1 * 22.98976928 + 1 * 85.4678 + 1 * 132.9054519 + 1 * 223.0197359 + 1 * 268.12545 + 34 * 271.13347 + 67 * 92.90638 + 78 * 232.03806 + 2463 * 0 = 34889.6510 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₂H₂B₂Cl₂CsDbFrK₂LiMg₂Mn₂N₂NaNb₆₇O₂P₂RbSg₃₄Th₇₈Uuo₂₄₆₃Zn₂

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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