U30Pt5Fm3Hg4Ag6H700N48Cl20S21Ar18Au4Ga10Ne35Lr3Ru7He200 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀ is 18302.2355 g/mol

Convert between U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀ weight and moles

Compound	Moles		Weight, g
U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀

Elemental composition of U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀

Element	Symbol	Atomic weight	Atoms	Mass percent
Uranium	U	238.02891	30	39.0164
Platinum	Pt	195.084	5	5.3295
Fermium	Fm	257.095105	3	4.2142
Mercury	Hg	200.59	4	4.3839
Silver	Ag	107.8682	6	3.5362
Hydrogen	H	1.00794	700	3.8550
Nitrogen	N	14.0067	48	3.6734
Chlorine	Cl	35.453	20	3.8742
Sulfur	S	32.065	21	3.6791
Argon	Ar	39.948	18	3.9288
Gold	Au	196.966569	4	4.3048
Gallium	Ga	69.723	10	3.8095
Neon	Ne	20.1797	35	3.8590
Lawrencium	Lr	262.1096	3	4.2964
Ruthenium	Ru	101.07	7	3.8656
Helium	He	4.002602	200	4.3739

Computing molar mass step by step
First, compute the number of each atom in U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀: U: 30, Pt: 5, Fm: 3, Hg: 4, Ag: 6, H: 700, N: 48, Cl: 20, S: 21, Ar: 18, Au: 4, Ga: 10, Ne: 35, Lr: 3, Ru: 7, He: 200 Then, lookup atomic weights for each element in periodic table: U: 238.02891, Pt: 195.084, Fm: 257.095105, Hg: 200.59, Ag: 107.8682, H: 1.00794, N: 14.0067, Cl: 35.453, S: 32.065, Ar: 39.948, Au: 196.966569, Ga: 69.723, Ne: 20.1797, Lr: 262.10963, Ru: 101.07, He: 4.002602 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (U₃₀Pt₅Fm₃Hg₄Ag₆H₇₀₀N₄₈Cl₂₀S₂₁Ar₁₈Au₄Ga₁₀Ne₃₅Lr₃Ru₇He₂₀₀) = ∑ Count_i * Weight_i = Count(U) * Weight(U) + Count(Pt) * Weight(Pt) + Count(Fm) * Weight(Fm) + Count(Hg) * Weight(Hg) + Count(Ag) * Weight(Ag) + Count(H) * Weight(H) + Count(N) * Weight(N) + Count(Cl) * Weight(Cl) + Count(S) * Weight(S) + Count(Ar) * Weight(Ar) + Count(Au) * Weight(Au) + Count(Ga) * Weight(Ga) + Count(Ne) * Weight(Ne) + Count(Lr) * Weight(Lr) + Count(Ru) * Weight(Ru) + Count(He) * Weight(He) = 30 * 238.02891 + 5 * 195.084 + 3 * 257.095105 + 4 * 200.59 + 6 * 107.8682 + 700 * 1.00794 + 48 * 14.0067 + 20 * 35.453 + 21 * 32.065 + 18 * 39.948 + 4 * 196.966569 + 10 * 69.723 + 35 * 20.1797 + 3 * 262.10963 + 7 * 101.07 + 200 * 4.002602 = 18302.2355 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is Ag₆Ar₁₈Au₄Cl₂₀Fm₃Ga₁₀H₇₀₀He₂₀₀Hg₄Lr₃N₄₈Ne₃₅Pt₅Ru₇S₂₁U₃₀

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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