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Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg is 1795.1842 g/mol

Convert between AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg weight and moles
CompoundMolesWeight, g
AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg

Elemental composition of AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg
ElementSymbolAtomic weightAtomsMass percent
AluminumAl26.981538611.5030
BoronB10.81110.6022
CarbonC12.010721.3381
CesiumCs132.905451917.4034
BerylliumBe9.01218210.5020
ArgonAr39.94812.2253
FluorineF18.998403211.0583
HydrogenH1.0079420.1123
IodineI126.9044717.0692
PotassiumK39.098324.3559
MolybdenumMo95.9615.3454
NitrogenN14.006721.5605
NeonNe20.179711.1241
SodiumNa22.9897692811.2806
MagnesiumMg24.305011.3539
SulfurS32.06511.7862
CopperCu63.54613.5398
ZincZn65.3813.6420
YttriumY88.9058514.9525
XenonXe131.29317.3136
VanadiumV50.941512.8377
TungstenW183.84110.2407
PhosphorusP30.97376211.7254
ArsenicAs74.9216014.1735
SiliconSi28.085511.5645
ChlorineCl35.45311.9749
CalciumCa40.07812.2325
MercuryHg200.59111.1738
SilverAg107.868216.0088

Computing molar mass step by step

First, compute the number of each atom in AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg:
Al: 1, B: 1, C: 2, Cs: 1, Be: 1, Ar: 1, F: 1, H: 2, I: 1, K: 2, Mo: 1, N: 2, Ne: 1, Na: 1, Mg: 1, S: 1, Cu: 1, Zn: 1, Y: 1, Xe: 1, V: 1, W: 1, P: 1, As: 1, Si: 1, Cl: 1, Ca: 1, Hg: 1, Ag: 1

Then, lookup atomic weights for each element in periodic table:
Al: 26.9815386, B: 10.811, C: 12.0107, Cs: 132.9054519, Be: 9.012182, Ar: 39.948, F: 18.9984032, H: 1.00794, I: 126.90447, K: 39.0983, Mo: 95.96, N: 14.0067, Ne: 20.1797, Na: 22.98976928, Mg: 24.305, S: 32.065, Cu: 63.546, Zn: 65.38, Y: 88.90585, Xe: 131.293, V: 50.9415, W: 183.84, P: 30.973762, As: 74.9216, Si: 28.0855, Cl: 35.453, Ca: 40.078, Hg: 200.59, Ag: 107.8682

Now, compute the sum of products of number of atoms to the atomic weight:
Molar mass (AlBC2CsBeArFH2IK2MoN2NeNaMgSCuZnYXeVWPAsSiClCaHgAg) = ∑ Counti * Weighti =
Count(Al) * Weight(Al) + Count(B) * Weight(B) + Count(C) * Weight(C) + Count(Cs) * Weight(Cs) + Count(Be) * Weight(Be) + Count(Ar) * Weight(Ar) + Count(F) * Weight(F) + Count(H) * Weight(H) + Count(I) * Weight(I) + Count(K) * Weight(K) + Count(Mo) * Weight(Mo) + Count(N) * Weight(N) + Count(Ne) * Weight(Ne) + Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(S) * Weight(S) + Count(Cu) * Weight(Cu) + Count(Zn) * Weight(Zn) + Count(Y) * Weight(Y) + Count(Xe) * Weight(Xe) + Count(V) * Weight(V) + Count(W) * Weight(W) + Count(P) * Weight(P) + Count(As) * Weight(As) + Count(Si) * Weight(Si) + Count(Cl) * Weight(Cl) + Count(Ca) * Weight(Ca) + Count(Hg) * Weight(Hg) + Count(Ag) * Weight(Ag) =
1 * 26.9815386 + 1 * 10.811 + 2 * 12.0107 + 1 * 132.9054519 + 1 * 9.012182 + 1 * 39.948 + 1 * 18.9984032 + 2 * 1.00794 + 1 * 126.90447 + 2 * 39.0983 + 1 * 95.96 + 2 * 14.0067 + 1 * 20.1797 + 1 * 22.98976928 + 1 * 24.305 + 1 * 32.065 + 1 * 63.546 + 1 * 65.38 + 1 * 88.90585 + 1 * 131.293 + 1 * 50.9415 + 1 * 183.84 + 1 * 30.973762 + 1 * 74.9216 + 1 * 28.0855 + 1 * 35.453 + 1 * 40.078 + 1 * 200.59 + 1 * 107.8682 =
1795.1842 g/mol


Mass Percent CompositionAtomic Percent Composition
Al: 1.50%B: 0.60%C: 1.34%Cs: 7.40%Be: 0.50%Ar: 2.23%F: 1.06%I: 7.07%K: 4.36%Mo: 5.35%N: 1.56%Ne: 1.12%Na: 1.28%Mg: 1.35%S: 1.79%Cu: 3.54%Zn: 3.64%Y: 4.95%Xe: 7.31%V: 2.84%W: 10.24%P: 1.73%As: 4.17%Si: 1.56%Cl: 1.97%Ca: 2.23%Hg: 11.17%Ag: 6.01%
Al Aluminum (1.50%)
B Boron (0.60%)
C Carbon (1.34%)
Cs Cesium (7.40%)
Be Beryllium (0.50%)
Ar Argon (2.23%)
F Fluorine (1.06%)
I Iodine (7.07%)
K Potassium (4.36%)
Mo Molybdenum (5.35%)
N Nitrogen (1.56%)
Ne Neon (1.12%)
Na Sodium (1.28%)
Mg Magnesium (1.35%)
S Sulfur (1.79%)
Cu Copper (3.54%)
Zn Zinc (3.64%)
Y Yttrium (4.95%)
Xe Xenon (7.31%)
V Vanadium (2.84%)
W Tungsten (10.24%)
P Phosphorus (1.73%)
As Arsenic (4.17%)
Si Silicon (1.56%)
Cl Chlorine (1.97%)
Ca Calcium (2.23%)
Hg Mercury (11.17%)
Ag Silver (6.01%)
Al: 3.03%B: 3.03%C: 6.06%Cs: 3.03%Be: 3.03%Ar: 3.03%F: 3.03%H: 6.06%I: 3.03%K: 6.06%Mo: 3.03%N: 6.06%Ne: 3.03%Na: 3.03%Mg: 3.03%S: 3.03%Cu: 3.03%Zn: 3.03%Y: 3.03%Xe: 3.03%V: 3.03%W: 3.03%P: 3.03%As: 3.03%Si: 3.03%Cl: 3.03%Ca: 3.03%Hg: 3.03%Ag: 3.03%
Al Aluminum (3.03%)
B Boron (3.03%)
C Carbon (6.06%)
Cs Cesium (3.03%)
Be Beryllium (3.03%)
Ar Argon (3.03%)
F Fluorine (3.03%)
H Hydrogen (6.06%)
I Iodine (3.03%)
K Potassium (6.06%)
Mo Molybdenum (3.03%)
N Nitrogen (6.06%)
Ne Neon (3.03%)
Na Sodium (3.03%)
Mg Magnesium (3.03%)
S Sulfur (3.03%)
Cu Copper (3.03%)
Zn Zinc (3.03%)
Y Yttrium (3.03%)
Xe Xenon (3.03%)
V Vanadium (3.03%)
W Tungsten (3.03%)
P Phosphorus (3.03%)
As Arsenic (3.03%)
Si Silicon (3.03%)
Cl Chlorine (3.03%)
Ca Calcium (3.03%)
Hg Mercury (3.03%)
Ag Silver (3.03%)
Mass Percent Composition
Al: 1.50%B: 0.60%C: 1.34%Cs: 7.40%Be: 0.50%Ar: 2.23%F: 1.06%I: 7.07%K: 4.36%Mo: 5.35%N: 1.56%Ne: 1.12%Na: 1.28%Mg: 1.35%S: 1.79%Cu: 3.54%Zn: 3.64%Y: 4.95%Xe: 7.31%V: 2.84%W: 10.24%P: 1.73%As: 4.17%Si: 1.56%Cl: 1.97%Ca: 2.23%Hg: 11.17%Ag: 6.01%
Al Aluminum (1.50%)
B Boron (0.60%)
C Carbon (1.34%)
Cs Cesium (7.40%)
Be Beryllium (0.50%)
Ar Argon (2.23%)
F Fluorine (1.06%)
I Iodine (7.07%)
K Potassium (4.36%)
Mo Molybdenum (5.35%)
N Nitrogen (1.56%)
Ne Neon (1.12%)
Na Sodium (1.28%)
Mg Magnesium (1.35%)
S Sulfur (1.79%)
Cu Copper (3.54%)
Zn Zinc (3.64%)
Y Yttrium (4.95%)
Xe Xenon (7.31%)
V Vanadium (2.84%)
W Tungsten (10.24%)
P Phosphorus (1.73%)
As Arsenic (4.17%)
Si Silicon (1.56%)
Cl Chlorine (1.97%)
Ca Calcium (2.23%)
Hg Mercury (11.17%)
Ag Silver (6.01%)
Atomic Percent Composition
Al: 3.03%B: 3.03%C: 6.06%Cs: 3.03%Be: 3.03%Ar: 3.03%F: 3.03%H: 6.06%I: 3.03%K: 6.06%Mo: 3.03%N: 6.06%Ne: 3.03%Na: 3.03%Mg: 3.03%S: 3.03%Cu: 3.03%Zn: 3.03%Y: 3.03%Xe: 3.03%V: 3.03%W: 3.03%P: 3.03%As: 3.03%Si: 3.03%Cl: 3.03%Ca: 3.03%Hg: 3.03%Ag: 3.03%
Al Aluminum (3.03%)
B Boron (3.03%)
C Carbon (6.06%)
Cs Cesium (3.03%)
Be Beryllium (3.03%)
Ar Argon (3.03%)
F Fluorine (3.03%)
H Hydrogen (6.06%)
I Iodine (3.03%)
K Potassium (6.06%)
Mo Molybdenum (3.03%)
N Nitrogen (6.06%)
Ne Neon (3.03%)
Na Sodium (3.03%)
Mg Magnesium (3.03%)
S Sulfur (3.03%)
Cu Copper (3.03%)
Zn Zinc (3.03%)
Y Yttrium (3.03%)
Xe Xenon (3.03%)
V Vanadium (3.03%)
W Tungsten (3.03%)
P Phosphorus (3.03%)
As Arsenic (3.03%)
Si Silicon (3.03%)
Cl Chlorine (3.03%)
Ca Calcium (3.03%)
Hg Mercury (3.03%)
Ag Silver (3.03%)

Related
Oxidation state calculator
Compound properties

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

Practice what you learned:

Weights of atoms and isotopes are from NIST article.

Related: Molecular weights of amino acids

molecular weights calculated today
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