H100B50C50N50O50F50P50S50K50IRbLrHgPoBiTlAtUNoFmEsSb100Pb31W molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W is 30095.7105 g/mol

Convert between H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W weight and moles

Compound	Moles		Weight, g
H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W

Elemental composition of H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	100	0.3349
Boron	B	10.811	50	1.7961
Carbon	C	12.0107	50	1.9954
Nitrogen	N	14.0067	50	2.3270
Oxygen	O	15.9994	50	2.6581
Fluorine	F	18.9984032	50	3.1563
Phosphorus	P	30.973762	50	5.1459
Sulfur	S	32.065	50	5.3272
Potassium	K	39.0983	50	6.4957
Iodine	I	126.90447	1	0.4217
Rubidium	Rb	85.4678	1	0.2840
Lawrencium	Lr	262.1096	1	0.8709
Mercury	Hg	200.59	1	0.6665
Polonium	Po	208.982430	1	0.6944
Bismuth	Bi	208.98040	1	0.6944
Thallium	Tl	204.3833	1	0.6791
Astatine	At	209.987148	1	0.6977
Uranium	U	238.02891	1	0.7909
Nobelium	No	259.1010	1	0.8609
Fermium	Fm	257.095105	1	0.8543
Einsteinium	Es	252.08298	1	0.8376
Antimony	Sb	121.760	100	40.4576
Lead	Pb	207.2	31	21.3426
Tungsten	W	183.84	1	0.6109

Computing molar mass step by step
First, compute the number of each atom in H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W: H: 100, B: 50, C: 50, N: 50, O: 50, F: 50, P: 50, S: 50, K: 50, I: 1, Rb: 1, Lr: 1, Hg: 1, Po: 1, Bi: 1, Tl: 1, At: 1, U: 1, No: 1, Fm: 1, Es: 1, Sb: 100, Pb: 31, W: 1 Then, lookup atomic weights for each element in periodic table: H: 1.00794, B: 10.811, C: 12.0107, N: 14.0067, O: 15.9994, F: 18.9984032, P: 30.973762, S: 32.065, K: 39.0983, I: 126.90447, Rb: 85.4678, Lr: 262.10963, Hg: 200.59, Po: 208.9824304, Bi: 208.9804, Tl: 204.3833, At: 209.987148, U: 238.02891, No: 259.10103, Fm: 257.095105, Es: 252.08298, Sb: 121.76, Pb: 207.2, W: 183.84 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁₀₀B₅₀C₅₀N₅₀O₅₀F₅₀P₅₀S₅₀K₅₀IRbLrHgPoBiTlAtUNoFmEsSb₁₀₀Pb₃₁W) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(B) * Weight(B) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(F) * Weight(F) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(K) * Weight(K) + Count(I) * Weight(I) + Count(Rb) * Weight(Rb) + Count(Lr) * Weight(Lr) + Count(Hg) * Weight(Hg) + Count(Po) * Weight(Po) + Count(Bi) * Weight(Bi) + Count(Tl) * Weight(Tl) + Count(At) * Weight(At) + Count(U) * Weight(U) + Count(No) * Weight(No) + Count(Fm) * Weight(Fm) + Count(Es) * Weight(Es) + Count(Sb) * Weight(Sb) + Count(Pb) * Weight(Pb) + Count(W) * Weight(W) = 100 * 1.00794 + 50 * 10.811 + 50 * 12.0107 + 50 * 14.0067 + 50 * 15.9994 + 50 * 18.9984032 + 50 * 30.973762 + 50 * 32.065 + 50 * 39.0983 + 1 * 126.90447 + 1 * 85.4678 + 1 * 262.10963 + 1 * 200.59 + 1 * 208.9824304 + 1 * 208.9804 + 1 * 204.3833 + 1 * 209.987148 + 1 * 238.02891 + 1 * 259.10103 + 1 * 257.095105 + 1 * 252.08298 + 100 * 121.76 + 31 * 207.2 + 1 * 183.84 = 30095.7105 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₅₀H₁₀₀AtB₅₀BiEsF₅₀FmHgIK₅₀LrN₅₀NoO₅₀P₅₀Pb₃₁PoRbS₅₀Sb₁₀₀TlUW

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