H1He2Li3B6C6O987U6543CF654NP9865Pt654Au876Ag65432 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂ is 9249548.1803 g/mol

Convert between H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂ weight and moles

Compound	Moles		Weight, g
H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂

Elemental composition of H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂

Element	Symbol	Atomic weight	Atoms	Mass percent
Hydrogen	H	1.00794	1	0.0000
Helium	He	4.002602	2	0.0001
Lithium	Li	6.941	3	0.0002
Boron	B	10.811	6	0.0007
Carbon	C	12.0107	7	0.0009
Oxygen	O	15.9994	987	0.1707
Uranium	U	238.02891	6543	16.8378
Fluorine	F	18.9984032	654	0.1343
Nitrogen	N	14.0067	1	0.0002
Phosphorus	P	30.973762	9865	3.3035
Platinum	Pt	195.084	654	1.3794
Gold	Au	196.966569	876	1.8654
Silver	Ag	107.8682	65432	76.3068

Computing molar mass step by step
First, compute the number of each atom in H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂: H: 1, He: 2, Li: 3, B: 6, C: 7, O: 987, U: 6543, F: 654, N: 1, P: 9865, Pt: 654, Au: 876, Ag: 65432 Then, lookup atomic weights for each element in periodic table: H: 1.00794, He: 4.002602, Li: 6.941, B: 10.811, C: 12.0107, O: 15.9994, U: 238.02891, F: 18.9984032, N: 14.0067, P: 30.973762, Pt: 195.084, Au: 196.966569, Ag: 107.8682 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (H₁He₂Li₃B₆C₆O₉₈₇U₆₅₄₃CF₆₅₄NP₉₈₆₅Pt₆₅₄Au₈₇₆Ag₆₅₄₃₂) = ∑ Count_i * Weight_i = Count(H) * Weight(H) + Count(He) * Weight(He) + Count(Li) * Weight(Li) + Count(B) * Weight(B) + Count(C) * Weight(C) + Count(O) * Weight(O) + Count(U) * Weight(U) + Count(F) * Weight(F) + Count(N) * Weight(N) + Count(P) * Weight(P) + Count(Pt) * Weight(Pt) + Count(Au) * Weight(Au) + Count(Ag) * Weight(Ag) = 1 * 1.00794 + 2 * 4.002602 + 3 * 6.941 + 6 * 10.811 + 7 * 12.0107 + 987 * 15.9994 + 6543 * 238.02891 + 654 * 18.9984032 + 1 * 14.0067 + 9865 * 30.973762 + 654 * 195.084 + 876 * 196.966569 + 65432 * 107.8682 = 9249548.1803 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₇HAg₆₅₄₃₂Au₈₇₆B₆F₆₅₄He₂Li₃NO₉₈₇P₉₈₆₅Pt₆₅₄U₆₅₄₃

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

Please let us know how we can improve this web app.

How to cite?

Choose languageDeutschEnglishEspañol Français Italiano Nederlands Polski Português Русский 中文日本語 한국어