Se9K5Si3Fe5Au2AgH51N5C11Xe3UupUusCa9Cu8O12 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂ is 4060.3123 g/mol

Convert between Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂ weight and moles

Compound	Moles		Weight, g
Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂

Elemental composition of Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Selenium	Se	78.96	9	17.5021
Potassium	K	39.0983	5	4.8147
Silicon	Si	28.0855	3	2.0751
Iron	Fe	55.845	5	6.8769
Gold	Au	196.966569	2	9.7020
Silver	Ag	107.8682	1	2.6566
Hydrogen	H	1.00794	51	1.2660
Nitrogen	N	14.0067	5	1.7248
Carbon	C	12.0107	11	3.2539
Xenon	Xe	131.293	3	9.7007
Moscovium	Uup	288.1925	1	7.0978
Tennessine	Uus	292.208	1	7.1967
Calcium	Ca	40.078	9	8.8836
Copper	Cu	63.546	8	12.5204
Oxygen	O	15.9994	12	4.7285

Computing molar mass step by step
First, compute the number of each atom in Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂: Se: 9, K: 5, Si: 3, Fe: 5, Au: 2, Ag: 1, H: 51, N: 5, C: 11, Xe: 3, Uup: 1, Uus: 1, Ca: 9, Cu: 8, O: 12 Then, lookup atomic weights for each element in periodic table: Se: 78.96, K: 39.0983, Si: 28.0855, Fe: 55.845, Au: 196.966569, Ag: 107.8682, H: 1.00794, N: 14.0067, C: 12.0107, Xe: 131.293, Uup: 288.19249, Uus: 292.20755, Ca: 40.078, Cu: 63.546, O: 15.9994 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Se₉K₅Si₃Fe₅Au₂AgH₅₁N₅C₁₁Xe₃UupUusCa₉Cu₈O₁₂) = ∑ Count_i * Weight_i = Count(Se) * Weight(Se) + Count(K) * Weight(K) + Count(Si) * Weight(Si) + Count(Fe) * Weight(Fe) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) + Count(H) * Weight(H) + Count(N) * Weight(N) + Count(C) * Weight(C) + Count(Xe) * Weight(Xe) + Count(Uup) * Weight(Uup) + Count(Uus) * Weight(Uus) + Count(Ca) * Weight(Ca) + Count(Cu) * Weight(Cu) + Count(O) * Weight(O) = 9 * 78.96 + 5 * 39.0983 + 3 * 28.0855 + 5 * 55.845 + 2 * 196.966569 + 1 * 107.8682 + 51 * 1.00794 + 5 * 14.0067 + 11 * 12.0107 + 3 * 131.293 + 1 * 288.19249 + 1 * 292.20755 + 9 * 40.078 + 8 * 63.546 + 12 * 15.9994 = 4060.3123 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₁₁H₅₁AgAu₂Ca₉Cu₈Fe₅K₅N₅O₁₂Se₉Si₃UupUusXe₃

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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