Pb7U2CO2Co3PoTiI3Fe4N4Fr5Ru7AmPoPu7O5H2He5Li5P9F4Ge6W3B2Au6K molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K is 9724.5795 g/mol

Convert between Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K weight and moles

Compound	Moles		Weight, g
Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K

Elemental composition of Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K

Element	Symbol	Atomic weight	Atoms	Mass percent
Lead	Pb	207.2	7	14.9148
Uranium	U	238.02891	2	4.8954
Carbon	C	12.0107	1	0.1235
Oxygen	O	15.9994	7	1.1517
Cobalt	Co	58.933195	3	1.8181
Polonium	Po	208.982430	2	4.2980
Titanium	Ti	47.867	1	0.4922
Iodine	I	126.90447	3	3.9150
Iron	Fe	55.845	4	2.2971
Nitrogen	N	14.0067	4	0.5761
Francium	Fr	223.019736	5	11.4668
Ruthenium	Ru	101.07	7	7.2753
Americium	Am	241.056829	1	2.4788
Plutonium	Pu	238.049560	7	17.1354
Hydrogen	H	1.00794	2	0.0207
Helium	He	4.002602	5	0.2058
Lithium	Li	6.941	5	0.3569
Phosphorus	P	30.973762	9	2.8666
Fluorine	F	18.9984032	4	0.7815
Germanium	Ge	72.64	6	4.4818
Tungsten	W	183.84	3	5.6714
Boron	B	10.811	2	0.2223
Gold	Au	196.966569	6	12.1527
Potassium	K	39.0983	1	0.4021

Computing molar mass step by step
First, compute the number of each atom in Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K: Pb: 7, U: 2, C: 1, O: 7, Co: 3, Po: 2, Ti: 1, I: 3, Fe: 4, N: 4, Fr: 5, Ru: 7, Am: 1, Pu: 7, H: 2, He: 5, Li: 5, P: 9, F: 4, Ge: 6, W: 3, B: 2, Au: 6, K: 1 Then, lookup atomic weights for each element in periodic table: Pb: 207.2, U: 238.02891, C: 12.0107, O: 15.9994, Co: 58.933195, Po: 208.9824304, Ti: 47.867, I: 126.90447, Fe: 55.845, N: 14.0067, Fr: 223.0197359, Ru: 101.07, Am: 241.0568291, Pu: 238.0495599, H: 1.00794, He: 4.002602, Li: 6.941, P: 30.973762, F: 18.9984032, Ge: 72.64, W: 183.84, B: 10.811, Au: 196.966569, K: 39.0983 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Pb₇U₂CO₂Co₃PoTiI₃Fe₄N₄Fr₅Ru₇AmPoPu₇O₅H₂He₅Li₅P₉F₄Ge₆W₃B₂Au₆K) = ∑ Count_i * Weight_i = Count(Pb) * Weight(Pb) + Count(U) * Weight(U) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(Co) * Weight(Co) + Count(Po) * Weight(Po) + Count(Ti) * Weight(Ti) + Count(I) * Weight(I) + Count(Fe) * Weight(Fe) + Count(N) * Weight(N) + Count(Fr) * Weight(Fr) + Count(Ru) * Weight(Ru) + Count(Am) * Weight(Am) + Count(Pu) * Weight(Pu) + Count(H) * Weight(H) + Count(He) * Weight(He) + Count(Li) * Weight(Li) + Count(P) * Weight(P) + Count(F) * Weight(F) + Count(Ge) * Weight(Ge) + Count(W) * Weight(W) + Count(B) * Weight(B) + Count(Au) * Weight(Au) + Count(K) * Weight(K) = 7 * 207.2 + 2 * 238.02891 + 1 * 12.0107 + 7 * 15.9994 + 3 * 58.933195 + 2 * 208.9824304 + 1 * 47.867 + 3 * 126.90447 + 4 * 55.845 + 4 * 14.0067 + 5 * 223.0197359 + 7 * 101.07 + 1 * 241.0568291 + 7 * 238.0495599 + 2 * 1.00794 + 5 * 4.002602 + 5 * 6.941 + 9 * 30.973762 + 4 * 18.9984032 + 6 * 72.64 + 3 * 183.84 + 2 * 10.811 + 6 * 196.966569 + 1 * 39.0983 = 9724.5795 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is CH₂AmAu₆B₂Co₃F₄Fe₄Fr₅Ge₆He₅I₃KLi₅N₄O₇P₉Pb₇Po₂Pu₇Ru₇TiU₂W₃

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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