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Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og is 28807.7668 g/mol

Convert between Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og weight and moles
CompoundMolesWeight, g
Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og

Elemental composition of Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og
ElementSymbolAtomic weightAtomsMass percent
YttriumY88.90585164.9379
GermaniumGe72.64143.5302
UraniumU238.02891129.9152
OxygenO15.9994140.7775
HydrogenH1.00794160.0560
MoscoviumMc288.19251313.0052
ManganeseMn54.938045152.8606
CobaltCo58.933195204.0915
DarmstadtiumDs281.16211817.5679
TitaniumTi47.867142.3262
AluminumAl26.9815386171.5922
XenonXe131.293198.6594
ActiniumAc227.0277522318.1258
PotassiumK39.0983192.5787
VanadiumV50.9415111.9452
AntimonySb121.760198.0306
OganessonOg0.000000010.0000

Computing molar mass step by step

First, compute the number of each atom in Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og:
Y: 16, Ge: 14, U: 12, O: 14, H: 16, Mc: 13, Mn: 15, Co: 20, Ds: 18, Ti: 14, Al: 17, Xe: 19, Ac: 23, K: 19, V: 11, Sb: 19, Og: 1

Then, lookup atomic weights for each element in periodic table:
Y: 88.90585, Ge: 72.64, U: 238.02891, O: 15.9994, H: 1.00794, Mc: 288.19249, Mn: 54.938045, Co: 58.933195, Ds: 281.16206, Ti: 47.867, Al: 26.9815386, Xe: 131.293, Ac: 227.0277521, K: 39.0983, V: 50.9415, Sb: 121.76, Og: 0

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (Y16Ge14U12O14H16Mc13Mn15Co20Ds18Ti14Al17Xe19Ac23K19V11Sb19Og) = ∑ Counti * Weighti =
Count(Y) * Weight(Y) + Count(Ge) * Weight(Ge) + Count(U) * Weight(U) + Count(O) * Weight(O) + Count(H) * Weight(H) + Count(Mc) * Weight(Mc) + Count(Mn) * Weight(Mn) + Count(Co) * Weight(Co) + Count(Ds) * Weight(Ds) + Count(Ti) * Weight(Ti) + Count(Al) * Weight(Al) + Count(Xe) * Weight(Xe) + Count(Ac) * Weight(Ac) + Count(K) * Weight(K) + Count(V) * Weight(V) + Count(Sb) * Weight(Sb) + Count(Og) * Weight(Og) =
16 * 88.90585 + 14 * 72.64 + 12 * 238.02891 + 14 * 15.9994 + 16 * 1.00794 + 13 * 288.19249 + 15 * 54.938045 + 20 * 58.933195 + 18 * 281.16206 + 14 * 47.867 + 17 * 26.9815386 + 19 * 131.293 + 23 * 227.0277521 + 19 * 39.0983 + 11 * 50.9415 + 19 * 121.76 + 1 * 0 =
28807.7668 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is Ac23Al17Co20Ds18Ge14H16K19Mc13Mn15O14OgSb19Ti14U12V11Xe19Y16

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, 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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