C25H42O76N28S17Cl15F19P35I10Br15Se3Si2As6Ge2Sb2Te3 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃ is 8454.4796 g/mol

Convert between C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃ weight and moles

Compound	Moles		Weight, g
C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃

Elemental composition of C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃

Element	Symbol	Atomic weight	Atoms	Mass percent
Carbon	C	12.0107	25	3.5516
Hydrogen	H	1.00794	42	0.5007
Oxygen	O	15.9994	76	14.3824
Nitrogen	N	14.0067	28	4.6388
Sulfur	S	32.065	17	6.4475
Chlorine	Cl	35.453	15	6.2901
Fluorine	F	18.9984032	19	4.2696
Phosphorus	P	30.973762	35	12.8226
Iodine	I	126.90447	10	15.0103
Bromine	Br	79.904	15	14.1766
Selenium	Se	78.96	3	2.8018
Silicon	Si	28.0855	2	0.6644
Arsenic	As	74.92160	6	5.3171
Germanium	Ge	72.64	2	1.7184
Antimony	Sb	121.760	2	2.8804
Tellurium	Te	127.60	3	4.5278

Computing molar mass step by step
First, compute the number of each atom in C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃: C: 25, H: 42, O: 76, N: 28, S: 17, Cl: 15, F: 19, P: 35, I: 10, Br: 15, Se: 3, Si: 2, As: 6, Ge: 2, Sb: 2, Te: 3 Then, lookup atomic weights for each element in periodic table: C: 12.0107, H: 1.00794, O: 15.9994, N: 14.0067, S: 32.065, Cl: 35.453, F: 18.9984032, P: 30.973762, I: 126.90447, Br: 79.904, Se: 78.96, Si: 28.0855, As: 74.9216, Ge: 72.64, Sb: 121.76, Te: 127.6 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (C₂₅H₄₂O₇₆N₂₈S₁₇Cl₁₅F₁₉P₃₅I₁₀Br₁₅Se₃Si₂As₆Ge₂Sb₂Te₃) = ∑ Count_i * Weight_i = Count(C) * Weight(C) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(N) * Weight(N) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(F) * Weight(F) + Count(P) * Weight(P) + Count(I) * Weight(I) + Count(Br) * Weight(Br) + Count(Se) * Weight(Se) + Count(Si) * Weight(Si) + Count(As) * Weight(As) + Count(Ge) * Weight(Ge) + Count(Sb) * Weight(Sb) + Count(Te) * Weight(Te) = 25 * 12.0107 + 42 * 1.00794 + 76 * 15.9994 + 28 * 14.0067 + 17 * 32.065 + 15 * 35.453 + 19 * 18.9984032 + 35 * 30.973762 + 10 * 126.90447 + 15 * 79.904 + 3 * 78.96 + 2 * 28.0855 + 6 * 74.9216 + 2 * 72.64 + 2 * 121.76 + 3 * 127.6 = 8454.4796 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₂₅H₄₂As₆Br₁₅Cl₁₅F₁₉Ge₂I₁₀N₂₈O₇₆P₃₅S₁₇Sb₂Se₃Si₂Te₃

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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