Ra659Ba231Lr4768Sc167Gd167V4789Md101P987Au765876Pb54678Hg568 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈ is 164059962.9928 g/mol

Convert between Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈ weight and moles

Compound	Moles		Weight, g
Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈

Elemental composition of Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈

Element	Symbol	Atomic weight	Atoms	Mass percent
Radium	Ra	226.025410	659	0.0908
Barium	Ba	137.327	231	0.0193
Lawrencium	Lr	262.1096	4768	0.7618
Scandium	Sc	44.955912	167	0.0046
Gadolinium	Gd	157.25	167	0.0160
Vanadium	V	50.9415	4789	0.1487
Mendelevium	Md	258.098431	101	0.0159
Phosphorus	P	30.973762	987	0.0186
Gold	Au	196.966569	765876	91.9493
Lead	Pb	207.2	54678	6.9056
Mercury	Hg	200.59	568	0.0694

Computing molar mass step by step
First, compute the number of each atom in Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈: Ra: 659, Ba: 231, Lr: 4768, Sc: 167, Gd: 167, V: 4789, Md: 101, P: 987, Au: 765876, Pb: 54678, Hg: 568 Then, lookup atomic weights for each element in periodic table: Ra: 226.0254098, Ba: 137.327, Lr: 262.10963, Sc: 44.955912, Gd: 157.25, V: 50.9415, Md: 258.098431, P: 30.973762, Au: 196.966569, Pb: 207.2, Hg: 200.59 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Ra₆₅₉Ba₂₃₁Lr₄₇₆₈Sc₁₆₇Gd₁₆₇V₄₇₈₉Md₁₀₁P₉₈₇Au₇₆₅₈₇₆Pb₅₄₆₇₈Hg₅₆₈) = ∑ Count_i * Weight_i = Count(Ra) * Weight(Ra) + Count(Ba) * Weight(Ba) + Count(Lr) * Weight(Lr) + Count(Sc) * Weight(Sc) + Count(Gd) * Weight(Gd) + Count(V) * Weight(V) + Count(Md) * Weight(Md) + Count(P) * Weight(P) + Count(Au) * Weight(Au) + Count(Pb) * Weight(Pb) + Count(Hg) * Weight(Hg) = 659 * 226.0254098 + 231 * 137.327 + 4768 * 262.10963 + 167 * 44.955912 + 167 * 157.25 + 4789 * 50.9415 + 101 * 258.098431 + 987 * 30.973762 + 765876 * 196.966569 + 54678 * 207.2 + 568 * 200.59 = 164059962.9928 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Au₇₆₅₈₇₆Ba₂₃₁Gd₁₆₇Hg₅₆₈Lr₄₇₆₈Md₁₀₁P₉₈₇Pb₅₄₆₇₈Ra₆₅₉Sc₁₆₇V₄₇₈₉

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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