Mn2(SO4)3Fe4Mg2Rn1Au1Ag1Br3Fr2H119CsPbISiUSnSbRaXeHe5Ni3Mt molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt is 3794.7327 g/mol

Convert between Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt weight and moles

Compound	Moles		Weight, g
Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt

Elemental composition of Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt

Element	Symbol	Atomic weight	Atoms	Mass percent
Manganese	Mn	54.938045	2	2.8955
Iron	Fe	55.845	4	5.8866
Magnesium	Mg	24.3050	2	1.2810
Radon	Rn	210.990601	1	5.5601
Gold	Au	196.966569	1	5.1905
Silver	Ag	107.8682	1	2.8426
Bromine	Br	79.904	3	6.3170
Francium	Fr	223.019736	2	11.7542
Hydrogen	H	1.00794	119	3.1608
Cesium	Cs	132.9054519	1	3.5024
Lead	Pb	207.2	1	5.4602
Iodine	I	126.90447	1	3.3442
Silicon	Si	28.0855	1	0.7401
Uranium	U	238.02891	1	6.2726
Tin	Sn	118.710	1	3.1283
Antimony	Sb	121.760	1	3.2087
Radium	Ra	226.025410	1	5.9563
Xenon	Xe	131.293	1	3.4599
Helium	He	4.002602	5	0.5274
Nickel	Ni	58.6934	3	4.6401
Meitnerium	Mt	276.1512	1	7.2772
Sulfur	S	32.065	3	2.5350
Oxygen	O	15.9994	12	5.0595

Computing molar mass step by step
First, compute the number of each atom in Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt: Mn: 2, Fe: 4, Mg: 2, Rn: 1, Au: 1, Ag: 1, Br: 3, Fr: 2, H: 119, Cs: 1, Pb: 1, I: 1, Si: 1, U: 1, Sn: 1, Sb: 1, Ra: 1, Xe: 1, He: 5, Ni: 3, Mt: 1, S: 3, O: 12 Then, lookup atomic weights for each element in periodic table: Mn: 54.938045, Fe: 55.845, Mg: 24.305, Rn: 210.990601, Au: 196.966569, Ag: 107.8682, Br: 79.904, Fr: 223.0197359, H: 1.00794, Cs: 132.9054519, Pb: 207.2, I: 126.90447, Si: 28.0855, U: 238.02891, Sn: 118.71, Sb: 121.76, Ra: 226.0254098, Xe: 131.293, He: 4.002602, Ni: 58.6934, Mt: 276.15116, S: 32.065, O: 15.9994 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Mn₂(SO₄)₃Fe₄Mg₂Rn₁Au₁Ag₁Br₃Fr₂H₁₁₉CsPbISiUSnSbRaXeHe₅Ni₃Mt) = ∑ Count_i * Weight_i = Count(Mn) * Weight(Mn) + Count(Fe) * Weight(Fe) + Count(Mg) * Weight(Mg) + Count(Rn) * Weight(Rn) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) + Count(Br) * Weight(Br) + Count(Fr) * Weight(Fr) + Count(H) * Weight(H) + Count(Cs) * Weight(Cs) + Count(Pb) * Weight(Pb) + Count(I) * Weight(I) + Count(Si) * Weight(Si) + Count(U) * Weight(U) + Count(Sn) * Weight(Sn) + Count(Sb) * Weight(Sb) + Count(Ra) * Weight(Ra) + Count(Xe) * Weight(Xe) + Count(He) * Weight(He) + Count(Ni) * Weight(Ni) + Count(Mt) * Weight(Mt) + Count(S) * Weight(S) + Count(O) * Weight(O) = 2 * 54.938045 + 4 * 55.845 + 2 * 24.305 + 1 * 210.990601 + 1 * 196.966569 + 1 * 107.8682 + 3 * 79.904 + 2 * 223.0197359 + 119 * 1.00794 + 1 * 132.9054519 + 1 * 207.2 + 1 * 126.90447 + 1 * 28.0855 + 1 * 238.02891 + 1 * 118.71 + 1 * 121.76 + 1 * 226.0254098 + 1 * 131.293 + 5 * 4.002602 + 3 * 58.6934 + 1 * 276.15116 + 3 * 32.065 + 12 * 15.9994 = 3794.7327 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is AgAuBr₃CsFe₄Fr₂H₁₁₉He₅IMg₂Mn₂MtNi₃O₁₂PbRaRnS₃SbSiSnUXe

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

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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