H40C34O17N10S6F6Cl6Br3I2P8BSe5Al7Ta2Au5W3Li4K3Y2Si3Sc2Zn5Ag2 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂ is 5653.5534 g/mol

Convert between H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂ weight and moles

Compound	Moles		Weight, g
H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂

Elemental composition of H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	40	0.7131
Carbon	C	12.0107	34	7.2231
Oxygen	O	15.9994	17	4.8110
Nitrogen	N	14.0067	10	2.4775
Sulfur	S	32.065	6	3.4030
Fluorine	F	18.9984032	6	2.0163
Chlorine	Cl	35.453	6	3.7626
Bromine	Br	79.904	3	4.2400
Iodine	I	126.90447	2	4.4894
Phosphorus	P	30.973762	8	4.3829
Boron	B	10.811	1	0.1912
Selenium	Se	78.96	5	6.9832
Aluminum	Al	26.9815386	7	3.3407
Tantalum	Ta	180.94788	2	6.4012
Gold	Au	196.966569	5	17.4197
Tungsten	W	183.84	3	9.7553
Lithium	Li	6.941	4	0.4911
Potassium	K	39.0983	3	2.0747
Yttrium	Y	88.90585	2	3.1451
Silicon	Si	28.0855	3	1.4903
Scandium	Sc	44.955912	2	1.5904
Zinc	Zn	65.38	5	5.7822
Silver	Ag	107.8682	2	3.8159

Computing molar mass step by step
First, compute the number of each atom in H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂: H: 40, C: 34, O: 17, N: 10, S: 6, F: 6, Cl: 6, Br: 3, I: 2, P: 8, B: 1, Se: 5, Al: 7, Ta: 2, Au: 5, W: 3, Li: 4, K: 3, Y: 2, Si: 3, Sc: 2, Zn: 5, Ag: 2 Then, lookup atomic weights for each element in periodic table: H: 1.00794, C: 12.0107, O: 15.9994, N: 14.0067, S: 32.065, F: 18.9984032, Cl: 35.453, Br: 79.904, I: 126.90447, P: 30.973762, B: 10.811, Se: 78.96, Al: 26.9815386, Ta: 180.94788, Au: 196.966569, W: 183.84, Li: 6.941, K: 39.0983, Y: 88.90585, Si: 28.0855, Sc: 44.955912, Zn: 65.38, Ag: 107.8682 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₄₀C₃₄O₁₇N₁₀S₆F₆Cl₆Br₃I₂P₈BSe₅Al₇Ta₂Au₅W₃Li₄K₃Y₂Si₃Sc₂Zn₅Ag₂) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(S) * Weight(S) + Count(F) * Weight(F) + Count(Cl) * Weight(Cl) + Count(Br) * Weight(Br) + Count(I) * Weight(I) + Count(P) * Weight(P) + Count(B) * Weight(B) + Count(Se) * Weight(Se) + Count(Al) * Weight(Al) + Count(Ta) * Weight(Ta) + Count(Au) * Weight(Au) + Count(W) * Weight(W) + Count(Li) * Weight(Li) + Count(K) * Weight(K) + Count(Y) * Weight(Y) + Count(Si) * Weight(Si) + Count(Sc) * Weight(Sc) + Count(Zn) * Weight(Zn) + Count(Ag) * Weight(Ag) = 40 * 1.00794 + 34 * 12.0107 + 17 * 15.9994 + 10 * 14.0067 + 6 * 32.065 + 6 * 18.9984032 + 6 * 35.453 + 3 * 79.904 + 2 * 126.90447 + 8 * 30.973762 + 1 * 10.811 + 5 * 78.96 + 7 * 26.9815386 + 2 * 180.94788 + 5 * 196.966569 + 3 * 183.84 + 4 * 6.941 + 3 * 39.0983 + 2 * 88.90585 + 3 * 28.0855 + 2 * 44.955912 + 5 * 65.38 + 2 * 107.8682 = 5653.5534 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₃₄H₄₀Ag₂Al₇Au₅BBr₃Cl₆F₆I₂K₃Li₄N₁₀O₁₇P₈S₆Sc₂Se₅Si₃Ta₂W₃Y₂Zn₅

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

Please let us know how we can improve this web app.

How to cite?

Choose languageDeutschEnglishEspañol Français Italiano Nederlands Polski Português Русский 中文日本語 한국어