H2P4U92S93O391I771Pu7813Cl291Ca2991Ar929F4241Lr271Te290109B8 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈ is 39325887.5776 g/mol

Convert between H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈ weight and moles

Compound	Moles		Weight, g
H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈

Elemental composition of H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	2	0.0000
Phosphorus	P	30.973762	4	0.0003
Uranium	U	238.02891	92	0.0557
Sulfur	S	32.065	93	0.0076
Oxygen	O	15.9994	391	0.0159
Iodine	I	126.90447	771	0.2488
Plutonium	Pu	238.049560	7813	4.7294
Chlorine	Cl	35.453	291	0.0262
Calcium	Ca	40.078	2991	0.3048
Argon	Ar	39.948	929	0.0944
Fluorine	F	18.9984032	4241	0.2049
Lawrencium	Lr	262.1096	271	0.1806
Tellurium	Te	127.60	290109	94.1311
Boron	B	10.811	8	0.0002

Computing molar mass step by step
First, compute the number of each atom in H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈: H: 2, P: 4, U: 92, S: 93, O: 391, I: 771, Pu: 7813, Cl: 291, Ca: 2991, Ar: 929, F: 4241, Lr: 271, Te: 290109, B: 8 Then, lookup atomic weights for each element in periodic table: H: 1.00794, P: 30.973762, U: 238.02891, S: 32.065, O: 15.9994, I: 126.90447, Pu: 238.0495599, Cl: 35.453, Ca: 40.078, Ar: 39.948, F: 18.9984032, Lr: 262.10963, Te: 127.6, B: 10.811 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₂P₄U₉₂S₉₃O₃₉₁I₇₇₁Pu₇₈₁₃Cl₂₉₁Ca₂₉₉₁Ar₉₂₉F₄₂₄₁Lr₂₇₁Te₂₉₀₁₀₉B₈) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(P) * Weight(P) + Count(U) * Weight(U) + Count(S) * Weight(S) + Count(O) * Weight(O) + Count(I) * Weight(I) + Count(Pu) * Weight(Pu) + Count(Cl) * Weight(Cl) + Count(Ca) * Weight(Ca) + Count(Ar) * Weight(Ar) + Count(F) * Weight(F) + Count(Lr) * Weight(Lr) + Count(Te) * Weight(Te) + Count(B) * Weight(B) = 2 * 1.00794 + 4 * 30.973762 + 92 * 238.02891 + 93 * 32.065 + 391 * 15.9994 + 771 * 126.90447 + 7813 * 238.0495599 + 291 * 35.453 + 2991 * 40.078 + 929 * 39.948 + 4241 * 18.9984032 + 271 * 262.10963 + 290109 * 127.6 + 8 * 10.811 = 39325887.5776 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ar₉₂₉B₈Ca₂₉₉₁Cl₂₉₁F₄₂₄₁H₂I₇₇₁Lr₂₇₁O₃₉₁P₄Pu₇₈₁₃S₉₃Te₂₉₀₁₀₉U₉₂

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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