N2O5Au2S7Fe2K44Pt3PB8Ru4BI9PO2Ra9CO3H400 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀ is 7378.7449 g/mol

Convert between N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀ weight and moles

Compound	Moles		Weight, g
N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀

Elemental composition of N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Nitrogen	N	14.0067	2	0.3796
Oxygen	O	15.9994	10	2.1683
Gold	Au	196.966569	2	5.3388
Sulfur	S	32.065	7	3.0419
Iron	Fe	55.845	2	1.5137
Potassium	K	39.0983	44	23.3146
Platinum	Pt	195.084	3	7.9316
Phosphorus	P	30.973762	2	0.8395
Boron	B	10.811	9	1.3186
Ruthenium	Ru	101.07	4	5.4790
Iodine	I	126.90447	9	15.4788
Radium	Ra	226.025410	9	27.5688
Carbon	C	12.0107	1	0.1628
Hydrogen	H	1.00794	400	5.4640

Computing molar mass step by step
First, compute the number of each atom in N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀: N: 2, O: 10, Au: 2, S: 7, Fe: 2, K: 44, Pt: 3, P: 2, B: 9, Ru: 4, I: 9, Ra: 9, C: 1, H: 400 Then, lookup atomic weights for each element in periodic table: N: 14.0067, O: 15.9994, Au: 196.966569, S: 32.065, Fe: 55.845, K: 39.0983, Pt: 195.084, P: 30.973762, B: 10.811, Ru: 101.07, I: 126.90447, Ra: 226.0254098, C: 12.0107, H: 1.00794 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (N₂O₅Au₂S₇Fe₂K₄₄Pt₃PB₈Ru₄BI₉PO₂Ra₉CO₃H₄₀₀) = ∑ Count_i * Weight_i = Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Au) * Weight(Au) + Count(S) * Weight(S) + Count(Fe) * Weight(Fe) + Count(K) * Weight(K) + Count(Pt) * Weight(Pt) + Count(P) * Weight(P) + Count(B) * Weight(B) + Count(Ru) * Weight(Ru) + Count(I) * Weight(I) + Count(Ra) * Weight(Ra) + Count(C) * Weight(C) + Count(H) * Weight(H) = 2 * 14.0067 + 10 * 15.9994 + 2 * 196.966569 + 7 * 32.065 + 2 * 55.845 + 44 * 39.0983 + 3 * 195.084 + 2 * 30.973762 + 9 * 10.811 + 4 * 101.07 + 9 * 126.90447 + 9 * 226.0254098 + 1 * 12.0107 + 400 * 1.00794 = 7378.7449 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is CH₄₀₀Au₂B₉Fe₂I₉K₄₄N₂O₁₀P₂Pt₃Ra₉Ru₄S₇

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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