Se57V15N34Te20S68U70Pu40Th14Np50I29Cl54Cr7Fe8O45 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅ is 58833.7551 g/mol

Convert between Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅ weight and moles

Compound	Moles		Weight, g
Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅

Elemental composition of Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅

Element	Symbol	Atomic weight	Atoms	Mass percent
Selenium	Se	78.96	57	7.6499
Vanadium	V	50.9415	15	1.2988
Nitrogen	N	14.0067	34	0.8094
Tellurium	Te	127.60	20	4.3376
Sulfur	S	32.065	68	3.7061
Uranium	U	238.02891	70	28.3205
Plutonium	Pu	238.049560	40	16.1846
Thorium	Th	232.03806	14	5.5215
Neptunium	Np	236.04657	50	20.0605
Iodine	I	126.90447	29	6.2553
Chlorine	Cl	35.453	54	3.2540
Chromium	Cr	51.9961	7	0.6186
Iron	Fe	55.845	8	0.7594
Oxygen	O	15.9994	45	1.2237

Computing molar mass step by step
First, compute the number of each atom in Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅: Se: 57, V: 15, N: 34, Te: 20, S: 68, U: 70, Pu: 40, Th: 14, Np: 50, I: 29, Cl: 54, Cr: 7, Fe: 8, O: 45 Then, lookup atomic weights for each element in periodic table: Se: 78.96, V: 50.9415, N: 14.0067, Te: 127.6, S: 32.065, U: 238.02891, Pu: 238.0495599, Th: 232.03806, Np: 236.04657, I: 126.90447, Cl: 35.453, Cr: 51.9961, Fe: 55.845, O: 15.9994 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (Se₅₇V₁₅N₃₄Te₂₀S₆₈U₇₀Pu₄₀Th₁₄Np₅₀I₂₉Cl₅₄Cr₇Fe₈O₄₅) = ∑ Count_i * Weight_i = Count(Se) * Weight(Se) + Count(V) * Weight(V) + Count(N) * Weight(N) + Count(Te) * Weight(Te) + Count(S) * Weight(S) + Count(U) * Weight(U) + Count(Pu) * Weight(Pu) + Count(Th) * Weight(Th) + Count(Np) * Weight(Np) + Count(I) * Weight(I) + Count(Cl) * Weight(Cl) + Count(Cr) * Weight(Cr) + Count(Fe) * Weight(Fe) + Count(O) * Weight(O) = 57 * 78.96 + 15 * 50.9415 + 34 * 14.0067 + 20 * 127.6 + 68 * 32.065 + 70 * 238.02891 + 40 * 238.0495599 + 14 * 232.03806 + 50 * 236.04657 + 29 * 126.90447 + 54 * 35.453 + 7 * 51.9961 + 8 * 55.845 + 45 * 15.9994 = 58833.7551 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Cl₅₄Cr₇Fe₈I₂₉N₃₄Np₅₀O₄₅Pu₄₀S₆₈Se₅₇Te₂₀Th₁₄U₇₀V₁₅

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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