RnF2IBNOClBr7HeCo77At777K19H2SO4HeU897 molar mass

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇ is 383070.2436 g/mol

Convert between RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇ weight and moles

Compound	Moles		Weight, g
RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇

Elemental composition of RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇

Element	Symbol	Atomic weight	Atoms	Mass percent
Radon	Rn	210.990601	1	0.0551
Fluorine	F	18.9984032	2	0.0099
Iodine	I	126.90447	1	0.0331
Boron	B	10.811	1	0.0028
Nitrogen	N	14.0067	1	0.0037
Oxygen	O	15.9994	5	0.0209
Chlorine	Cl	35.453	1	0.0093
Bromine	Br	79.904	7	0.1460
Helium	He	4.002602	2	0.0021
Cobalt	Co	58.933195	77	1.1846
Astatine	At	209.987148	777	42.5927
Potassium	K	39.0983	19	0.1939
Hydrogen	H	1.00794	2	0.0005
Sulfur	S	32.065	1	0.0084
Uranium	U	238.02891	897	55.7370

Computing molar mass step by step
First, compute the number of each atom in RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇: Rn: 1, F: 2, I: 1, B: 1, N: 1, O: 5, Cl: 1, Br: 7, He: 2, Co: 77, At: 777, K: 19, H: 2, S: 1, U: 897 Then, lookup atomic weights for each element in periodic table: Rn: 210.990601, F: 18.9984032, I: 126.90447, B: 10.811, N: 14.0067, O: 15.9994, Cl: 35.453, Br: 79.904, He: 4.002602, Co: 58.933195, At: 209.987148, K: 39.0983, H: 1.00794, S: 32.065, U: 238.02891 Now, compute the sum of products of number of atoms to the atomic weight: Molar mass (RnF₂IBNOClBr₇HeCo₇₇At₇₇₇K₁₉H₂SO₄HeU₈₉₇) = ∑ Count_i * Weight_i = Count(Rn) * Weight(Rn) + Count(F) * Weight(F) + Count(I) * Weight(I) + Count(B) * Weight(B) + Count(N) * Weight(N) + Count(O) * Weight(O) + Count(Cl) * Weight(Cl) + Count(Br) * Weight(Br) + Count(He) * Weight(He) + Count(Co) * Weight(Co) + Count(At) * Weight(At) + Count(K) * Weight(K) + Count(H) * Weight(H) + Count(S) * Weight(S) + Count(U) * Weight(U) = 1 * 210.990601 + 2 * 18.9984032 + 1 * 126.90447 + 1 * 10.811 + 1 * 14.0067 + 5 * 15.9994 + 1 * 35.453 + 7 * 79.904 + 2 * 4.002602 + 77 * 58.933195 + 777 * 209.987148 + 19 * 39.0983 + 2 * 1.00794 + 1 * 32.065 + 897 * 238.02891 = 383070.2436 g/mol

Mass percent composition	Atomic percent composition

Formula in Hill system is At₇₇₇BBr₇ClCo₇₇F₂H₂He₂IK₁₉NO₅RnSU₈₉₇

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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