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Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105 is 6705.8812 g/mol

Convert between H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105 weight and moles
CompoundMolesWeight, g
H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105

Elemental composition of H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105
ElementSymbolAtomic weightAtomsMass percent
HydrogenH1.00794961.4429
FleroviumFl289.187314.3124
UraniumU238.0289113.5496
ActiniumAc227.02775213.3855
FluorineF18.998403210.2833
AntimonySb121.76011.8157
LeadPb207.213.0898
TelluriumTe127.6011.9028
CobaltCo58.93319510.8788
CadmiumCd112.41111.6763
RadiumRa226.02541013.3706
ArsenicAs74.9216011.1173
CuriumCm243.06138913.6246
EinsteiniumEs252.0829813.7591
ProtactiniumPa231.0358813.4453
RadonRn210.99060113.1464
PoloniumPo208.98243013.1164
MercuryHg200.5912.9913
ThalliumTl204.383313.0478
SodiumNa22.9897692810.3428
IodineI126.9044711.8924
BromineBr79.90411.1916
CarbonC12.010710118.0898
NitrogenN14.006771.4621
ChlorineCl35.45321.0574
SulfurS32.06520.9563
OxygenO15.999410525.0517

Computing molar mass step by step

First, compute the number of each atom in H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105:
H: 96, Fl: 1, U: 1, Ac: 1, F: 1, Sb: 1, Pb: 1, Te: 1, Co: 1, Cd: 1, Ra: 1, As: 1, Cm: 1, Es: 1, Pa: 1, Rn: 1, Po: 1, Hg: 1, Tl: 1, Na: 1, I: 1, Br: 1, C: 101, N: 7, Cl: 2, S: 2, O: 105

Then, lookup atomic weights for each element in periodic table:
H: 1.00794, Fl: 289.18728, U: 238.02891, Ac: 227.0277521, F: 18.9984032, Sb: 121.76, Pb: 207.2, Te: 127.6, Co: 58.933195, Cd: 112.411, Ra: 226.0254098, As: 74.9216, Cm: 243.0613891, Es: 252.08298, Pa: 231.03588, Rn: 210.990601, Po: 208.9824304, Hg: 200.59, Tl: 204.3833, Na: 22.98976928, I: 126.90447, Br: 79.904, C: 12.0107, N: 14.0067, Cl: 35.453, S: 32.065, O: 15.9994

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (H96FlUAcFSbPbTeCoCdRaAsCmEsPaRnPoHgTlNaIBrC101N7Cl2S2O105) = ∑ Counti * Weighti =
Count(H) * Weight(H) + Count(Fl) * Weight(Fl) + Count(U) * Weight(U) + Count(Ac) * Weight(Ac) + Count(F) * Weight(F) + Count(Sb) * Weight(Sb) + Count(Pb) * Weight(Pb) + Count(Te) * Weight(Te) + Count(Co) * Weight(Co) + Count(Cd) * Weight(Cd) + Count(Ra) * Weight(Ra) + Count(As) * Weight(As) + Count(Cm) * Weight(Cm) + Count(Es) * Weight(Es) + Count(Pa) * Weight(Pa) + Count(Rn) * Weight(Rn) + Count(Po) * Weight(Po) + Count(Hg) * Weight(Hg) + Count(Tl) * Weight(Tl) + Count(Na) * Weight(Na) + Count(I) * Weight(I) + Count(Br) * Weight(Br) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(Cl) * Weight(Cl) + Count(S) * Weight(S) + Count(O) * Weight(O) =
96 * 1.00794 + 1 * 289.18728 + 1 * 238.02891 + 1 * 227.0277521 + 1 * 18.9984032 + 1 * 121.76 + 1 * 207.2 + 1 * 127.6 + 1 * 58.933195 + 1 * 112.411 + 1 * 226.0254098 + 1 * 74.9216 + 1 * 243.0613891 + 1 * 252.08298 + 1 * 231.03588 + 1 * 210.990601 + 1 * 208.9824304 + 1 * 200.59 + 1 * 204.3833 + 1 * 22.98976928 + 1 * 126.90447 + 1 * 79.904 + 101 * 12.0107 + 7 * 14.0067 + 2 * 35.453 + 2 * 32.065 + 105 * 15.9994 =
6705.8812 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is C101H96AcAsBrCdCl2CmCoEsFFlHgIN7NaO105PaPbPoRaRnS2SbTeTlU

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

molecular weights calculated today
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