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Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV is 1689.6281 g/mol

Convert between CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV weight and moles
CompoundMolesWeight, g
CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV

Elemental composition of CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV
ElementSymbolAtomic weightAtomsMass percent
CadmiumCd112.41116.6530
IndiumIn114.81816.7955
TitaniumTi47.86725.6660
LeadPb207.2112.2631
BismuthBi208.98040112.3684
PoloniumPo208.982430112.3685
AstatineAt209.987148112.4280
RadonRn210.990601112.4874
OxygenO15.999410.9469
CarbonC12.010710.7108
NitrogenN14.006710.8290
FluorineF18.998403211.1244
NeonNe20.179711.1943
HydrogenH1.0079410.0597
LithiumLi6.94110.4108
BerylliumBe9.01218210.5334
SodiumNa22.9897692811.3606
MagnesiumMg24.305011.4385
PotassiumK39.098312.3140
CalciumCa40.07812.3720
ScandiumSc44.95591212.6607
VanadiumV50.941513.0150

Computing molar mass step by step

First, compute the number of each atom in CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV:
Cd: 1, In: 1, Ti: 2, Pb: 1, Bi: 1, Po: 1, At: 1, Rn: 1, O: 1, C: 1, N: 1, F: 1, Ne: 1, H: 1, Li: 1, Be: 1, Na: 1, Mg: 1, K: 1, Ca: 1, Sc: 1, V: 1

Then, lookup atomic weights for each element in periodic table:
Cd: 112.411, In: 114.818, Ti: 47.867, Pb: 207.2, Bi: 208.9804, Po: 208.9824304, At: 209.987148, Rn: 210.990601, O: 15.9994, C: 12.0107, N: 14.0067, F: 18.9984032, Ne: 20.1797, H: 1.00794, Li: 6.941, Be: 9.012182, Na: 22.98976928, Mg: 24.305, K: 39.0983, Ca: 40.078, Sc: 44.955912, V: 50.9415

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (CdInTiPbBiPoAtRnOCNFNeHLiBeNaMgKCaScTiV) = ∑ Counti * Weighti =
Count(Cd) * Weight(Cd) + Count(In) * Weight(In) + Count(Ti) * Weight(Ti) + Count(Pb) * Weight(Pb) + Count(Bi) * Weight(Bi) + Count(Po) * Weight(Po) + Count(At) * Weight(At) + Count(Rn) * Weight(Rn) + Count(O) * Weight(O) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(F) * Weight(F) + Count(Ne) * Weight(Ne) + Count(H) * Weight(H) + Count(Li) * Weight(Li) + Count(Be) * Weight(Be) + Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(K) * Weight(K) + Count(Ca) * Weight(Ca) + Count(Sc) * Weight(Sc) + Count(V) * Weight(V) =
1 * 112.411 + 1 * 114.818 + 2 * 47.867 + 1 * 207.2 + 1 * 208.9804 + 1 * 208.9824304 + 1 * 209.987148 + 1 * 210.990601 + 1 * 15.9994 + 1 * 12.0107 + 1 * 14.0067 + 1 * 18.9984032 + 1 * 20.1797 + 1 * 1.00794 + 1 * 6.941 + 1 * 9.012182 + 1 * 22.98976928 + 1 * 24.305 + 1 * 39.0983 + 1 * 40.078 + 1 * 44.955912 + 1 * 50.9415 =
1689.6281 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is CHAtBeBiCaCdFInKLiMgNNaNeOPbPoRnScTi2V

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

  1. 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.
  2. 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).
  3. Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.
  4. 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.

Related: Molecular weights of amino acids

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