Lu2Fe5RfBr4Au2Yb8Uuh17Sg12Ir4Hf7Pr49Be47K15 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅ is 16178.6780 g/mol

Convert between Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅ weight and moles

Compound	Moles		Weight, g
Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅

Elemental composition of Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅

Element	Symbol	Atomic weight	Atoms	Mass percent
Lutetium	Lu	174.9668	2	2.1629
Iron	Fe	55.845	5	1.7259
Rutherfordium	Rf	265.1167	1	1.6387
Bromine	Br	79.904	4	1.9755
Gold	Au	196.966569	2	2.4349
Ytterbium	Yb	173.054	8	8.5571
Livermorium	Uuh	0.0000000	17	0.0000
Seaborgium	Sg	271.1335	12	20.1104
Iridium	Ir	192.217	4	4.7524
Hafnium	Hf	178.49	7	7.7227
Praseodymium	Pr	140.90765	49	42.6764
Beryllium	Be	9.012182	47	2.6181
Potassium	K	39.0983	15	3.6250

Computing molar mass step by step
First, compute the number of each atom in Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅: Lu: 2, Fe: 5, Rf: 1, Br: 4, Au: 2, Yb: 8, Uuh: 17, Sg: 12, Ir: 4, Hf: 7, Pr: 49, Be: 47, K: 15 Then, lookup atomic weights for each element in periodic table: Lu: 174.9668, Fe: 55.845, Rf: 265.1167, Br: 79.904, Au: 196.966569, Yb: 173.054, Uuh: 0, Sg: 271.13347, Ir: 192.217, Hf: 178.49, Pr: 140.90765, Be: 9.012182, K: 39.0983 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Lu₂Fe₅RfBr₄Au₂Yb₈Uuh₁₇Sg₁₂Ir₄Hf₇Pr₄₉Be₄₇K₁₅) = ∑ Count_i * Weight_i = Count(Lu) * Weight(Lu) + Count(Fe) * Weight(Fe) + Count(Rf) * Weight(Rf) + Count(Br) * Weight(Br) + Count(Au) * Weight(Au) + Count(Yb) * Weight(Yb) + Count(Uuh) * Weight(Uuh) + Count(Sg) * Weight(Sg) + Count(Ir) * Weight(Ir) + Count(Hf) * Weight(Hf) + Count(Pr) * Weight(Pr) + Count(Be) * Weight(Be) + Count(K) * Weight(K) = 2 * 174.9668 + 5 * 55.845 + 1 * 265.1167 + 4 * 79.904 + 2 * 196.966569 + 8 * 173.054 + 17 * 0 + 12 * 271.13347 + 4 * 192.217 + 7 * 178.49 + 49 * 140.90765 + 47 * 9.012182 + 15 * 39.0983 = 16178.6780 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Au₂Be₄₇Br₄Fe₅Hf₇Ir₄K₁₅Lu₂Pr₄₉RfSg₁₂Uuh₁₇Yb₈

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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