H47O13Ar44U3Am17K2Ag8Be2BO3P98HeLi80Be2BC15N45O5F44Ne11Xe30 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀ is 17353.8081 g/mol

Convert between H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀ weight and moles

Compound	Moles		Weight, g
H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀

Elemental composition of H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	47	0.2730
Oxygen	O	15.9994	21	1.9361
Argon	Ar	39.948	44	10.1287
Uranium	U	238.02891	3	4.1149
Americium	Am	241.056829	17	23.6142
Potassium	K	39.0983	2	0.4506
Silver	Ag	107.8682	8	4.9727
Beryllium	Be	9.012182	4	0.2077
Boron	B	10.811	2	0.1246
Phosphorus	P	30.973762	98	17.4914
Helium	He	4.002602	1	0.0231
Lithium	Li	6.941	80	3.1998
Carbon	C	12.0107	15	1.0382
Nitrogen	N	14.0067	45	3.6321
Fluorine	F	18.9984032	44	4.8170
Neon	Ne	20.1797	11	1.2791
Xenon	Xe	131.293	30	22.6970

Computing molar mass step by step
First, compute the number of each atom in H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀: H: 47, O: 21, Ar: 44, U: 3, Am: 17, K: 2, Ag: 8, Be: 4, B: 2, P: 98, He: 1, Li: 80, C: 15, N: 45, F: 44, Ne: 11, Xe: 30 Then, lookup atomic weights for each element in periodic table: H: 1.00794, O: 15.9994, Ar: 39.948, U: 238.02891, Am: 241.0568291, K: 39.0983, Ag: 107.8682, Be: 9.012182, B: 10.811, P: 30.973762, He: 4.002602, Li: 6.941, C: 12.0107, N: 14.0067, F: 18.9984032, Ne: 20.1797, Xe: 131.293 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₄₇O₁₃Ar₄₄U₃Am₁₇K₂Ag₈Be₂BO₃P₉₈HeLi₈₀Be₂BC₁₅N₄₅O₅F₄₄Ne₁₁Xe₃₀) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Ar) * Weight(Ar) + Count(U) * Weight(U) + Count(Am) * Weight(Am) + Count(K) * Weight(K) + Count(Ag) * Weight(Ag) + Count(Be) * Weight(Be) + Count(B) * Weight(B) + Count(P) * Weight(P) + Count(He) * Weight(He) + Count(Li) * Weight(Li) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(F) * Weight(F) + Count(Ne) * Weight(Ne) + Count(Xe) * Weight(Xe) = 47 * 1.00794 + 21 * 15.9994 + 44 * 39.948 + 3 * 238.02891 + 17 * 241.0568291 + 2 * 39.0983 + 8 * 107.8682 + 4 * 9.012182 + 2 * 10.811 + 98 * 30.973762 + 1 * 4.002602 + 80 * 6.941 + 15 * 12.0107 + 45 * 14.0067 + 44 * 18.9984032 + 11 * 20.1797 + 30 * 131.293 = 17353.8081 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₁₅H₄₇Ag₈Am₁₇Ar₄₄B₂Be₄F₄₄HeK₂Li₈₀N₄₅Ne₁₁O₂₁P₉₈U₃Xe₃₀

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