Printed from https://www.webqc.org

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb is 3377.2732 g/mol

Convert between RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb weight and moles
CompoundMolesWeight, g
RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb

Elemental composition of RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb
ElementSymbolAtomic weightAtomsMass percent
RubidiumRb85.467812.5307
StrontiumSr87.6212.5944
YttriumY88.9058512.6325
ZirconiumZr91.22412.7011
NiobiumNb92.9063812.7509
MolybdenumMo95.9612.8413
TechnetiumTc96.90636512.8694
RutheniumRu101.0712.9927
RhodiumRh102.9055013.0470
PalladiumPd106.4213.1511
SilverAg107.868213.1939
CadmiumCd112.41113.3285
IndiumIn114.81813.3997
TinSn118.71013.5150
AntimonySb121.76013.6053
TelluriumTe127.6013.7782
IodineI126.9044713.7576
CesiumCs132.905451913.9353
BariumBa137.32714.0662
LanthanumLa138.9054714.1129
CeriumCe140.11614.1488
PraseodymiumPr140.9076514.1722
NeodymiumNd144.24214.2710
PromethiumPm144.91274914.2908
SamariumSm150.3614.4521
EuropiumEu151.96414.4996
GadoliniumGd157.2514.6561
TerbiumTb158.9253514.7057

Computing molar mass step by step

First, compute the number of each atom in RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb:
Rb: 1, Sr: 1, Y: 1, Zr: 1, Nb: 1, Mo: 1, Tc: 1, Ru: 1, Rh: 1, Pd: 1, Ag: 1, Cd: 1, In: 1, Sn: 1, Sb: 1, Te: 1, I: 1, Cs: 1, Ba: 1, La: 1, Ce: 1, Pr: 1, Nd: 1, Pm: 1, Sm: 1, Eu: 1, Gd: 1, Tb: 1

Then, lookup atomic weights for each element in periodic table:
Rb: 85.4678, Sr: 87.62, Y: 88.90585, Zr: 91.224, Nb: 92.90638, Mo: 95.96, Tc: 96.906365, Ru: 101.07, Rh: 102.9055, Pd: 106.42, Ag: 107.8682, Cd: 112.411, In: 114.818, Sn: 118.71, Sb: 121.76, Te: 127.6, I: 126.90447, Cs: 132.9054519, Ba: 137.327, La: 138.90547, Ce: 140.116, Pr: 140.90765, Nd: 144.242, Pm: 144.912749, Sm: 150.36, Eu: 151.964, Gd: 157.25, Tb: 158.92535

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (RbSrYZrNbMoTcRuRhPdAgCdInSnSbTeICsBaLaCePrNdPmSmEuGdTb) = ∑ Counti * Weighti =
Count(Rb) * Weight(Rb) + Count(Sr) * Weight(Sr) + Count(Y) * Weight(Y) + Count(Zr) * Weight(Zr) + Count(Nb) * Weight(Nb) + Count(Mo) * Weight(Mo) + Count(Tc) * Weight(Tc) + Count(Ru) * Weight(Ru) + Count(Rh) * Weight(Rh) + Count(Pd) * Weight(Pd) + Count(Ag) * Weight(Ag) + Count(Cd) * Weight(Cd) + Count(In) * Weight(In) + Count(Sn) * Weight(Sn) + Count(Sb) * Weight(Sb) + Count(Te) * Weight(Te) + Count(I) * Weight(I) + Count(Cs) * Weight(Cs) + Count(Ba) * Weight(Ba) + Count(La) * Weight(La) + Count(Ce) * Weight(Ce) + Count(Pr) * Weight(Pr) + Count(Nd) * Weight(Nd) + Count(Pm) * Weight(Pm) + Count(Sm) * Weight(Sm) + Count(Eu) * Weight(Eu) + Count(Gd) * Weight(Gd) + Count(Tb) * Weight(Tb) =
1 * 85.4678 + 1 * 87.62 + 1 * 88.90585 + 1 * 91.224 + 1 * 92.90638 + 1 * 95.96 + 1 * 96.906365 + 1 * 101.07 + 1 * 102.9055 + 1 * 106.42 + 1 * 107.8682 + 1 * 112.411 + 1 * 114.818 + 1 * 118.71 + 1 * 121.76 + 1 * 127.6 + 1 * 126.90447 + 1 * 132.9054519 + 1 * 137.327 + 1 * 138.90547 + 1 * 140.116 + 1 * 140.90765 + 1 * 144.242 + 1 * 144.912749 + 1 * 150.36 + 1 * 151.964 + 1 * 157.25 + 1 * 158.92535 =
3377.2732 g/mol


Mass percent compositionAtomic percent composition

Formula in Hill system is AgBaCdCeCsEuGdIInLaMoNbNdPdPmPrRbRhRuSbSmSnSrTbTcTeYZr

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?
Choose languageDeutschEnglishEspañolFrançaisItalianoNederlandsPolskiPortuguêsРусский中文日本語한국어