SI55H2C39O175U2Y4BI4I1P7V23SN1Th4Li5Sm3Cr6N4B13He80CS10 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀ is 15769.0486 g/mol

Convert between SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀ weight and moles

Compound	Moles		Weight, g
SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀

Elemental composition of SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Sulfur	S	32.065	12	2.4401
Iodine	I	126.90447	60	48.2862
Hydrogen	H	1.00794	2	0.0128
Carbon	C	12.0107	40	3.0467
Oxygen	O	15.9994	175	17.7556
Uranium	U	238.02891	2	3.0189
Yttrium	Y	88.90585	4	2.2552
Boron	B	10.811	14	0.9598
Phosphorus	P	30.973762	7	1.3749
Vanadium	V	50.9415	23	7.4301
Nitrogen	N	14.0067	5	0.4441
Thorium	Th	232.03806	4	5.8859
Lithium	Li	6.941	5	0.2201
Samarium	Sm	150.36	3	2.8605
Chromium	Cr	51.9961	6	1.9784
Helium	He	4.002602	80	2.0306

Computing molar mass step by step
First, compute the number of each atom in SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀: S: 12, I: 60, H: 2, C: 40, O: 175, U: 2, Y: 4, B: 14, P: 7, V: 23, N: 5, Th: 4, Li: 5, Sm: 3, Cr: 6, He: 80 Then, lookup atomic weights for each element in periodic table: S: 32.065, I: 126.90447, H: 1.00794, C: 12.0107, O: 15.9994, U: 238.02891, Y: 88.90585, B: 10.811, P: 30.973762, V: 50.9415, N: 14.0067, Th: 232.03806, Li: 6.941, Sm: 150.36, Cr: 51.9961, He: 4.002602 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (SI₅₅H₂C₃₉O₁₇₅U₂Y₄BI₄I₁P₇V₂₃SN₁Th₄Li₅Sm₃Cr₆N₄B₁₃He₈₀CS₁₀) = ∑ Count_i * Weight_i = Count(S) * Weight(S) + Count(I) * Weight(I) + Count(H) * Weight(H) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(U) * Weight(U) + Count(Y) * Weight(Y) + Count(B) * Weight(B) + Count(P) * Weight(P) + Count(V) * Weight(V) + Count(N) * Weight(N) + Count(Th) * Weight(Th) + Count(Li) * Weight(Li) + Count(Sm) * Weight(Sm) + Count(Cr) * Weight(Cr) + Count(He) * Weight(He) = 12 * 32.065 + 60 * 126.90447 + 2 * 1.00794 + 40 * 12.0107 + 175 * 15.9994 + 2 * 238.02891 + 4 * 88.90585 + 14 * 10.811 + 7 * 30.973762 + 23 * 50.9415 + 5 * 14.0067 + 4 * 232.03806 + 5 * 6.941 + 3 * 150.36 + 6 * 51.9961 + 80 * 4.002602 = 15769.0486 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₄₀H₂B₁₄Cr₆He₈₀I₆₀Li₅N₅O₁₇₅P₇S₁₂Sm₃Th₄U₂V₂₃Y₄

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, 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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