U9U90YRbCsFr2La4C12H22O11NaNO300K2SO4Al2(SO4)3MnCl2KOHPBiAsU molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU is 31304.1799 g/mol

Convert between U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU weight and moles

Compound	Moles		Weight, g
U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU

Elemental composition of U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU

Element	Symbol	Atomic weight	Atoms	Mass percent
Uranium	U	238.02891	100	76.0374
Yttrium	Y	88.90585	1	0.2840
Rubidium	Rb	85.4678	1	0.2730
Cesium	Cs	132.9054519	1	0.4246
Francium	Fr	223.019736	2	1.4249
Lanthanum	La	138.90547	4	1.7749
Carbon	C	12.0107	12	0.4604
Hydrogen	H	1.00794	23	0.0741
Oxygen	O	15.9994	328	16.7639
Sodium	Na	22.98976928	1	0.0734
Nitrogen	N	14.0067	1	0.0447
Potassium	K	39.0983	3	0.3747
Sulfur	S	32.065	4	0.4097
Aluminum	Al	26.9815386	2	0.1724
Manganese	Mn	54.938045	1	0.1755
Chlorine	Cl	35.453	2	0.2265
Phosphorus	P	30.973762	1	0.0989
Bismuth	Bi	208.98040	1	0.6676
Arsenic	As	74.92160	1	0.2393

Computing molar mass step by step
First, compute the number of each atom in U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU: U: 100, Y: 1, Rb: 1, Cs: 1, Fr: 2, La: 4, C: 12, H: 23, O: 328, Na: 1, N: 1, K: 3, S: 4, Al: 2, Mn: 1, Cl: 2, P: 1, Bi: 1, As: 1 Then, lookup atomic weights for each element in periodic table: U: 238.02891, Y: 88.90585, Rb: 85.4678, Cs: 132.9054519, Fr: 223.0197359, La: 138.90547, C: 12.0107, H: 1.00794, O: 15.9994, Na: 22.98976928, N: 14.0067, K: 39.0983, S: 32.065, Al: 26.9815386, Mn: 54.938045, Cl: 35.453, P: 30.973762, Bi: 208.9804, As: 74.9216 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (U₉U₉₀YRbCsFr₂La₄C₁₂H₂₂O₁₁NaNO₃₀₀K₂SO₄Al₂(SO₄)₃MnCl₂KOHPBiAsU) = ∑ Count_i * Weight_i = Count(U) * Weight(U) + Count(Y) * Weight(Y) + Count(Rb) * Weight(Rb) + Count(Cs) * Weight(Cs) + Count(Fr) * Weight(Fr) + Count(La) * Weight(La) + Count(C) * Weight(C) + Count(H) * Weight(H) + Count(O) * Weight(O) + Count(Na) * Weight(Na) + Count(N) * Weight(N) + Count(K) * Weight(K) + Count(S) * Weight(S) + Count(Al) * Weight(Al) + Count(Mn) * Weight(Mn) + Count(Cl) * Weight(Cl) + Count(P) * Weight(P) + Count(Bi) * Weight(Bi) + Count(As) * Weight(As) = 100 * 238.02891 + 1 * 88.90585 + 1 * 85.4678 + 1 * 132.9054519 + 2 * 223.0197359 + 4 * 138.90547 + 12 * 12.0107 + 23 * 1.00794 + 328 * 15.9994 + 1 * 22.98976928 + 1 * 14.0067 + 3 * 39.0983 + 4 * 32.065 + 2 * 26.9815386 + 1 * 54.938045 + 2 * 35.453 + 1 * 30.973762 + 1 * 208.9804 + 1 * 74.9216 = 31304.1799 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is C₁₂H₂₃Al₂AsBiCl₂CsFr₂K₃La₄MnNNaO₃₂₈PRbS₄U₁₀₀Y

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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