H120U4Pu4Ra4Np4Md4Am4Rn4Es4Fm4Xe8Cm4Po4Hs4Bh4Sg4Db4Rf4Lr4No4 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄ is 19080.8055 g/mol

Convert between H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄ weight and moles

Compound	Moles		Weight, g
H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄

Elemental composition of H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	120	0.6339
Uranium	U	238.02891	4	4.9899
Plutonium	Pu	238.049560	4	4.9903
Radium	Ra	226.025410	4	4.7383
Neptunium	Np	236.04657	4	4.9484
Mendelevium	Md	258.098431	4	5.4106
Americium	Am	241.056829	4	5.0534
Radon	Rn	210.990601	4	4.4231
Einsteinium	Es	252.08298	4	5.2845
Fermium	Fm	257.095105	4	5.3896
Xenon	Xe	131.293	8	5.5047
Curium	Cm	243.061389	4	5.0954
Polonium	Po	208.982430	4	4.3810
Hassium	Hs	270.1347	4	5.6630
Bohrium	Bh	272.1380	4	5.7050
Seaborgium	Sg	271.1335	4	5.6839
Dubnium	Db	268.1255	4	5.6208
Rutherfordium	Rf	265.1167	4	5.5578
Lawrencium	Lr	262.1096	4	5.4947
Nobelium	No	259.1010	4	5.4317

Computing molar mass step by step
First, compute the number of each atom in H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄: H: 120, U: 4, Pu: 4, Ra: 4, Np: 4, Md: 4, Am: 4, Rn: 4, Es: 4, Fm: 4, Xe: 8, Cm: 4, Po: 4, Hs: 4, Bh: 4, Sg: 4, Db: 4, Rf: 4, Lr: 4, No: 4 Then, lookup atomic weights for each element in periodic table: H: 1.00794, U: 238.02891, Pu: 238.0495599, Ra: 226.0254098, Np: 236.04657, Md: 258.098431, Am: 241.0568291, Rn: 210.990601, Es: 252.08298, Fm: 257.095105, Xe: 131.293, Cm: 243.0613891, Po: 208.9824304, Hs: 270.13465, Bh: 272.13803, Sg: 271.13347, Db: 268.12545, Rf: 265.1167, Lr: 262.10963, No: 259.10103 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁₂₀U₄Pu₄Ra₄Np₄Md₄Am₄Rn₄Es₄Fm₄Xe₈Cm₄Po₄Hs₄Bh₄Sg₄Db₄Rf₄Lr₄No₄) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(U) * Weight(U) + Count(Pu) * Weight(Pu) + Count(Ra) * Weight(Ra) + Count(Np) * Weight(Np) + Count(Md) * Weight(Md) + Count(Am) * Weight(Am) + Count(Rn) * Weight(Rn) + Count(Es) * Weight(Es) + Count(Fm) * Weight(Fm) + Count(Xe) * Weight(Xe) + Count(Cm) * Weight(Cm) + Count(Po) * Weight(Po) + Count(Hs) * Weight(Hs) + Count(Bh) * Weight(Bh) + Count(Sg) * Weight(Sg) + Count(Db) * Weight(Db) + Count(Rf) * Weight(Rf) + Count(Lr) * Weight(Lr) + Count(No) * Weight(No) = 120 * 1.00794 + 4 * 238.02891 + 4 * 238.0495599 + 4 * 226.0254098 + 4 * 236.04657 + 4 * 258.098431 + 4 * 241.0568291 + 4 * 210.990601 + 4 * 252.08298 + 4 * 257.095105 + 8 * 131.293 + 4 * 243.0613891 + 4 * 208.9824304 + 4 * 270.13465 + 4 * 272.13803 + 4 * 271.13347 + 4 * 268.12545 + 4 * 265.1167 + 4 * 262.10963 + 4 * 259.10103 = 19080.8055 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Am₄Bh₄Cm₄Db₄Es₄Fm₄H₁₂₀Hs₄Lr₄Md₄No₄Np₄Po₄Pu₄Ra₄Rf₄Rn₄Sg₄U₄Xe₈

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