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Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9) is 2173.7609 g/mol

Convert between ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9) weight and moles
CompoundMolesWeight, g
ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9)

Elemental composition of ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9)
ElementSymbolAtomic weightAtomsMass percent
ScandiumSc44.95591212.0681
TitaniumTi47.86712.2020
TechnetiumTc96.90636514.4580
GermaniumGe72.6413.3417
ArsenicAs74.9216013.4466
YttriumY88.9058514.0900
ZirconiumZr91.22414.1966
GoldAu196.96656919.0611
SilverAg107.868214.9623
UraniumU238.02891110.9501
AstatineAt209.98714819.6601
HafniumHf178.4918.2111
PraseodymiumPr140.9076516.4822
CarbonC12.0107158.2880
HydrogenH1.00794241.1128
HeliumHe4.00260220.3683
BerylliumBe9.01218220.8292
LithiumLi6.94120.6386
BoronB10.81120.9947
NitrogenN14.006721.2887
OxygenO15.999421.4720
FluorineF18.998403221.7480
NeonNe20.179721.8567
SodiumNa22.9897692822.1152
AluminumAl26.981538622.4825
ArgonAr39.94823.6755

Computing molar mass step by step

First, compute the number of each atom in ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9):
Sc: 1, Ti: 1, Tc: 1, Ge: 1, As: 1, Y: 1, Zr: 1, Au: 1, Ag: 1, U: 1, At: 1, Hf: 1, Pr: 1, C: 15, H: 24, He: 2, Be: 2, Li: 2, B: 2, N: 2, O: 2, F: 2, Ne: 2, Na: 2, Al: 2, Ar: 2

Then, lookup atomic weights for each element in periodic table:
Sc: 44.955912, Ti: 47.867, Tc: 96.906365, Ge: 72.64, As: 74.9216, Y: 88.90585, Zr: 91.224, Au: 196.966569, Ag: 107.8682, U: 238.02891, At: 209.987148, Hf: 178.49, Pr: 140.90765, C: 12.0107, H: 1.00794, He: 4.002602, Be: 9.012182, Li: 6.941, B: 10.811, N: 14.0067, O: 15.9994, F: 18.9984032, Ne: 20.1797, Na: 22.98976928, Al: 26.9815386, Ar: 39.948

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (ScTiTcGeAsYZr(HHeBeLiBCNOFNeNaAlAr)2AuAgUAtHf(C6H5)(CH3)(C2H5)Pr(C4H9)) = ∑ Counti * Weighti =
Count(Sc) * Weight(Sc) + Count(Ti) * Weight(Ti) + Count(Tc) * Weight(Tc) + Count(Ge) * Weight(Ge) + Count(As) * Weight(As) + Count(Y) * Weight(Y) + Count(Zr) * Weight(Zr) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) + Count(U) * Weight(U) + Count(At) * Weight(At) + Count(Hf) * Weight(Hf) + Count(Pr) * Weight(Pr) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(He) * Weight(He) + Count(Be) * Weight(Be) + Count(Li) * Weight(Li) + Count(B) * Weight(B) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(F) * Weight(F) + Count(Ne) * Weight(Ne) + Count(Na) * Weight(Na) + Count(Al) * Weight(Al) + Count(Ar) * Weight(Ar) =
1 * 44.955912 + 1 * 47.867 + 1 * 96.906365 + 1 * 72.64 + 1 * 74.9216 + 1 * 88.90585 + 1 * 91.224 + 1 * 196.966569 + 1 * 107.8682 + 1 * 238.02891 + 1 * 209.987148 + 1 * 178.49 + 1 * 140.90765 + 15 * 12.0107 + 24 * 1.00794 + 2 * 4.002602 + 2 * 9.012182 + 2 * 6.941 + 2 * 10.811 + 2 * 14.0067 + 2 * 15.9994 + 2 * 18.9984032 + 2 * 20.1797 + 2 * 22.98976928 + 2 * 26.9815386 + 2 * 39.948 =
2173.7609 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is C15H24AgAl2Ar2AsAtAuB2Be2F2GeHe2HfLi2N2Na2Ne2O2PrScTcTiUYZr

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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