H100Li100Be100Na100Mg100K100Ca100Rb10000Sr100Cs100Ba100Fr100 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀ is 927108.4379 g/mol

Convert between H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀ weight and moles

Compound	Moles		Weight, g
H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀

Elemental composition of H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	100	0.0109
Lithium	Li	6.941	100	0.0749
Beryllium	Be	9.012182	100	0.0972
Sodium	Na	22.98976928	100	0.2480
Magnesium	Mg	24.3050	100	0.2622
Potassium	K	39.0983	100	0.4217
Calcium	Ca	40.078	100	0.4323
Rubidium	Rb	85.4678	10000	92.1875
Strontium	Sr	87.62	100	0.9451
Cesium	Cs	132.9054519	100	1.4335
Barium	Ba	137.327	100	1.4812
Francium	Fr	223.019736	100	2.4055

Computing molar mass step by step
First, compute the number of each atom in H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀: H: 100, Li: 100, Be: 100, Na: 100, Mg: 100, K: 100, Ca: 100, Rb: 10000, Sr: 100, Cs: 100, Ba: 100, Fr: 100 Then, lookup atomic weights for each element in periodic table: H: 1.00794, Li: 6.941, Be: 9.012182, Na: 22.98976928, Mg: 24.305, K: 39.0983, Ca: 40.078, Rb: 85.4678, Sr: 87.62, Cs: 132.9054519, Ba: 137.327, Fr: 223.0197359 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁₀₀Li₁₀₀Be₁₀₀Na₁₀₀Mg₁₀₀K₁₀₀Ca₁₀₀Rb₁₀₀₀₀Sr₁₀₀Cs₁₀₀Ba₁₀₀Fr₁₀₀) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(Li) * Weight(Li) + Count(Be) * Weight(Be) + Count(Na) * Weight(Na) + Count(Mg) * Weight(Mg) + Count(K) * Weight(K) + Count(Ca) * Weight(Ca) + Count(Rb) * Weight(Rb) + Count(Sr) * Weight(Sr) + Count(Cs) * Weight(Cs) + Count(Ba) * Weight(Ba) + Count(Fr) * Weight(Fr) = 100 * 1.00794 + 100 * 6.941 + 100 * 9.012182 + 100 * 22.98976928 + 100 * 24.305 + 100 * 39.0983 + 100 * 40.078 + 10000 * 85.4678 + 100 * 87.62 + 100 * 132.9054519 + 100 * 137.327 + 100 * 223.0197359 = 927108.4379 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ba₁₀₀Be₁₀₀Ca₁₀₀Cs₁₀₀Fr₁₀₀H₁₀₀K₁₀₀Li₁₀₀Mg₁₀₀Na₁₀₀Rb₁₀₀₀₀Sr₁₀₀

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, 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

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.
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).
Calculate molar mass of each element: multiply the atomic mass of each element by the number of atoms of that element in the compound.
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.

molecular weights calculated today

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