H1000He25C15N20O45Na9P4S2ClNi5Au9Ag2Hg3W10Pt20I4 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄ is 11850.0289 g/mol

Convert between H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄ weight and moles

Compound	Moles		Weight, g
H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄

Elemental composition of H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	1000	8.5058
Helium	He	4.002602	25	0.8444
Carbon	C	12.0107	15	1.5203
Nitrogen	N	14.0067	20	2.3640
Oxygen	O	15.9994	45	6.0757
Sodium	Na	22.98976928	9	1.7461
Phosphorus	P	30.973762	4	1.0455
Sulfur	S	32.065	2	0.5412
Chlorine	Cl	35.453	1	0.2992
Nickel	Ni	58.6934	5	2.4765
Gold	Au	196.966569	9	14.9594
Silver	Ag	107.8682	2	1.8206
Mercury	Hg	200.59	3	5.0782
Tungsten	W	183.84	10	15.5139
Platinum	Pt	195.084	20	32.9255
Iodine	I	126.90447	4	4.2837

Computing molar mass step by step
First, compute the number of each atom in H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄: H: 1000, He: 25, C: 15, N: 20, O: 45, Na: 9, P: 4, S: 2, Cl: 1, Ni: 5, Au: 9, Ag: 2, Hg: 3, W: 10, Pt: 20, I: 4 Then, lookup atomic weights for each element in periodic table: H: 1.00794, He: 4.002602, C: 12.0107, N: 14.0067, O: 15.9994, Na: 22.98976928, P: 30.973762, S: 32.065, Cl: 35.453, Ni: 58.6934, Au: 196.966569, Ag: 107.8682, Hg: 200.59, W: 183.84, Pt: 195.084, I: 126.90447 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁₀₀₀He₂₅C₁₅N₂₀O₄₅Na₉P₄S₂ClNi₅Au₉Ag₂Hg₃W₁₀Pt₂₀I₄) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(He) * Weight(He) + Count(C) * Weight(C) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Na) * Weight(Na) + Count(P) * Weight(P) + Count(S) * Weight(S) + Count(Cl) * Weight(Cl) + Count(Ni) * Weight(Ni) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) + Count(Hg) * Weight(Hg) + Count(W) * Weight(W) + Count(Pt) * Weight(Pt) + Count(I) * Weight(I) = 1000 * 1.00794 + 25 * 4.002602 + 15 * 12.0107 + 20 * 14.0067 + 45 * 15.9994 + 9 * 22.98976928 + 4 * 30.973762 + 2 * 32.065 + 1 * 35.453 + 5 * 58.6934 + 9 * 196.966569 + 2 * 107.8682 + 3 * 200.59 + 10 * 183.84 + 20 * 195.084 + 4 * 126.90447 = 11850.0289 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₁₅H₁₀₀₀Ag₂Au₉ClHe₂₅Hg₃I₄N₂₀Na₉Ni₅O₄₅P₄Pt₂₀S₂W₁₀

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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