Printed from https://www.webqc.org

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719 is 40403254.8874 g/mol

Convert between CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719 weight and moles
CompoundMolesWeight, g
CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719

Elemental composition of CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719
ElementSymbolAtomic weightAtomsMass percent
CarbonC12.010710.0000
HydrogenH1.0079410.0000
NitrogenN14.006710.0000
OxygenO15.999410.0000
SulfurS32.06510.0001
PhosphorusP30.97376210.0001
TungstenW183.8410.0005
CobaltCo58.93319510.0001
IronFe55.84510.0001
NickelNi58.693410.0001
CopperCu63.54610.0002
RadiumRa226.02541010.0006
SiliconSi28.085510.0001
SodiumNa22.9897692810.0001
MagnesiumMg24.305010.0001
ChlorineCl35.45310.0001
FluorineF18.998403210.0000
ChromiumCr51.996110.0001
OsmiumOs190.2310.0005
IridiumIr192.21710.0005
PlatinumPt195.08410.0005
PalladiumPd106.4210.0003
RhodiumRh102.9055010.0003
PlutoniumPu238.04956016971999.9957

Computing molar mass step by step

First, compute the number of each atom in CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719:
C: 1, H: 1, N: 1, O: 1, S: 1, P: 1, W: 1, Co: 1, Fe: 1, Ni: 1, Cu: 1, Ra: 1, Si: 1, Na: 1, Mg: 1, Cl: 1, F: 1, Cr: 1, Os: 1, Ir: 1, Pt: 1, Pd: 1, Rh: 1, Pu: 169719

Then, lookup atomic weights for each element in periodic table:
C: 12.0107, H: 1.00794, N: 14.0067, O: 15.9994, S: 32.065, P: 30.973762, W: 183.84, Co: 58.933195, Fe: 55.845, Ni: 58.6934, Cu: 63.546, Ra: 226.0254098, Si: 28.0855, Na: 22.98976928, Mg: 24.305, Cl: 35.453, F: 18.9984032, Cr: 51.9961, Os: 190.23, Ir: 192.217, Pt: 195.084, Pd: 106.42, Rh: 102.9055, Pu: 238.0495599

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (CHNOSPWCoFeNiCuRaSiNaMgClFCrOsIrPtPdRhPu169719) = ∑ Counti * Weighti =
Count(C) * Weight(C) + Count(H) * Weight(H) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(S) * Weight(S) + Count(P) * Weight(P) + Count(W) * Weight(W) + Count(Co) * Weight(Co) + Count(Fe) * Weight(Fe) + Count(Ni) * Weight(Ni) + Count(Cu) * Weight(Cu) + Count(Ra) * Weight(Ra) + Count(Si) * Weight(Si) + Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(Cl) * Weight(Cl) + Count(F) * Weight(F) + Count(Cr) * Weight(Cr) + Count(Os) * Weight(Os) + Count(Ir) * Weight(Ir) + Count(Pt) * Weight(Pt) + Count(Pd) * Weight(Pd) + Count(Rh) * Weight(Rh) + Count(Pu) * Weight(Pu) =
1 * 12.0107 + 1 * 1.00794 + 1 * 14.0067 + 1 * 15.9994 + 1 * 32.065 + 1 * 30.973762 + 1 * 183.84 + 1 * 58.933195 + 1 * 55.845 + 1 * 58.6934 + 1 * 63.546 + 1 * 226.0254098 + 1 * 28.0855 + 1 * 22.98976928 + 1 * 24.305 + 1 * 35.453 + 1 * 18.9984032 + 1 * 51.9961 + 1 * 190.23 + 1 * 192.217 + 1 * 195.084 + 1 * 106.42 + 1 * 102.9055 + 169719 * 238.0495599 =
40403254.8874 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is CHClCoCrCuFFeIrMgNNaNiOOsPPdPtPu169719RaRhSSiW

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
Please let us know how we can improve this web app.
Menu Balance Molar mass Gas laws Units Chemistry tools Periodic table Chemical forum Symmetry Constants Contribute Contact us
How to cite?