Cl3H6I9Mg6Cu7Pt20Au14Pt12Hg5K8Na34F7He3P5Ne2Ar9Xe4Kr4 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄ is 14502.9282 g/mol

Convert between Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄ weight and moles

Compound	Moles		Weight, g
Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄

Elemental composition of Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄

Element	Symbol	Atomic weight	Atoms	Mass percent
Chlorine	Cl	35.453	3	0.7334
Hydrogen	H	1.00794	6	0.0417
Iodine	I	126.90447	9	7.8752
Magnesium	Mg	24.3050	6	1.0055
Copper	Cu	63.546	7	3.0671
Platinum	Pt	195.084	32	43.0443
Gold	Au	196.966569	14	19.0136
Mercury	Hg	200.59	5	6.9155
Potassium	K	39.0983	8	2.1567
Sodium	Na	22.98976928	34	5.3896
Fluorine	F	18.9984032	7	0.9170
Helium	He	4.002602	3	0.0828
Phosphorus	P	30.973762	5	1.0678
Neon	Ne	20.1797	2	0.2783
Argon	Ar	39.948	9	2.4790
Xenon	Xe	131.293	4	3.6211
Krypton	Kr	83.798	4	2.3112

Computing molar mass step by step
First, compute the number of each atom in Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄: Cl: 3, H: 6, I: 9, Mg: 6, Cu: 7, Pt: 32, Au: 14, Hg: 5, K: 8, Na: 34, F: 7, He: 3, P: 5, Ne: 2, Ar: 9, Xe: 4, Kr: 4 Then, lookup atomic weights for each element in periodic table: Cl: 35.453, H: 1.00794, I: 126.90447, Mg: 24.305, Cu: 63.546, Pt: 195.084, Au: 196.966569, Hg: 200.59, K: 39.0983, Na: 22.98976928, F: 18.9984032, He: 4.002602, P: 30.973762, Ne: 20.1797, Ar: 39.948, Xe: 131.293, Kr: 83.798 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Cl₃H₆I₉Mg₆Cu₇Pt₂₀Au₁₄Pt₁₂Hg₅K₈Na₃₄F₇He₃P₅Ne₂Ar₉Xe₄Kr₄) = ∑ Count_i * Weight_i = Count(Cl) * Weight(Cl) + Count(H) * Weight(H) + Count(I) * Weight(I) + Count(Mg) * Weight(Mg) + Count(Cu) * Weight(Cu) + Count(Pt) * Weight(Pt) + Count(Au) * Weight(Au) + Count(Hg) * Weight(Hg) + Count(K) * Weight(K) + Count(Na) * Weight(Na) + Count(F) * Weight(F) + Count(He) * Weight(He) + Count(P) * Weight(P) + Count(Ne) * Weight(Ne) + Count(Ar) * Weight(Ar) + Count(Xe) * Weight(Xe) + Count(Kr) * Weight(Kr) = 3 * 35.453 + 6 * 1.00794 + 9 * 126.90447 + 6 * 24.305 + 7 * 63.546 + 32 * 195.084 + 14 * 196.966569 + 5 * 200.59 + 8 * 39.0983 + 34 * 22.98976928 + 7 * 18.9984032 + 3 * 4.002602 + 5 * 30.973762 + 2 * 20.1797 + 9 * 39.948 + 4 * 131.293 + 4 * 83.798 = 14502.9282 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ar₉Au₁₄Cl₃Cu₇F₇H₆He₃Hg₅I₉K₈Kr₄Mg₆Na₃₄Ne₂P₅Pt₃₂Xe₄

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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