Atomic Mass Of Cl

Work out the mass of the Cl. Mass = molar mass x moles = 35.45 g/mol x 3.606x10^-2 mol = 1.278327 g. Now mass M = total mass - mass Cl = 1.891 g - 1.278 g = 0.613 g. We also know that there is 1 M mole for every 3 Cl moles. Therefore moles M = 1/3 mol Cl. Moles M = 3.606x10^2- / 3. Moles M = 0.01202 moles. Moles = mass / molar mass. Naturally occurring chlorine consists of 35 Cl (mass 34.96885 amu) and 37 Cl (mass 36.96590 amu), with an average mass of 35.453 amu. What is the percent composition of Cl in terms of these two isotopes? The average mass of chlorine is the fraction that is 35 Cl times the mass of 35 Cl plus the fraction that is 37 Cl times the mass of.

Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of NaCl is 58.4428 g/mol
Compound name is sodium chloride
Convert between NaCl weight and moles

Compound	Moles		Weight, g
NaCl

Elemental composition of NaCl

Element	Symbol	Atomic weight	Atoms	Mass percent
Sodium	Na	22.98976928	1	39.3372
Chlorine	Cl	35.453	1	60.6628

Mass percent composition

Atomic percent composition

Sample reactions for NaCl

Equation	Reaction type
AgNO₃ + NaCl = AgCl + NaNO₃	double replacement
NaCl + F₂ = NaF + Cl₂	single replacement
NaCl + H₂SO₄ = Na₂SO₄ + HCl	double replacement
NaCl = Na + Cl₂	decomposition
Pb(NO₃)₂ + NaCl = PbCl₂ + NaNO₃	double replacement

Formula in Hill system is ClNa

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:

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Common compound names.

Examples of molar mass computations: NaCl, Ca(OH)2, K4[Fe(CN)6], CuSO4*5H2O, water, nitric acid, potassium permanganate, ethanol, fructose.
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)

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Examples of molecular weight computations: C[14]O[16]2, S[34]O[16]2.

Definitions of molecular mass, molecular weight, molar mass and molar weight

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.

Weights of atoms and isotopes are from NIST article.
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The atomic mass of an element is the average mass of the atoms of an element measured in atomic mass unit (amu, also known as daltons, D). The atomic mass is a weighted average of all of the isotopes of that element, in which the mass of each isotope is multiplied by the abundance of that particular isotope. (Atomic mass is also referred to as atomic weight, but the term 'mass' is more accurate.)

For instance, it can be determined experimentally that neon consists of three isotopes: neon-20 (with 10 protons and 10 neutrons in its nucleus) with a mass of 19.992 amu and an abundance of 90.48%, neon-21 (with 10 protons and 11 neutrons) with a mass of 20.994 amu and an abundance of 0.27%, and neon-22 (with 10 protons and 12 neutrons) with a mass of 21.991 amu and an abundance of 9.25%. The average atomic mass of neon is thus:

Atomic Mass Of Cl 37

0.9048	×	19.992 amu	=	18.09 amu
0.0027	×	20.994 amu	=	0.057 amu
0.0925	×	21.991 amu	=	2.03 amu
20.18 amu

Atomic Mass Of Cl In Amu

The atomic mass is useful in chemistry when it is paired with the mole concept: the atomic mass of an element, measured in amu, is the same as the mass in grams of one mole of an element. Thus, since the atomic mass of iron is 55.847 amu, one mole of iron atoms would weigh 55.847 grams. The same concept can be extended to ionic compounds and molecules. One formula unit of sodium chloride (NaCl) would weigh 58.44 amu (22.98977 amu for Na + 35.453 amu for Cl), so a mole of sodium chloride would weigh 58.44 grams. One molecule of water (H₂O) would weigh 18.02 amu (2×1.00797 amu for H + 15.9994 amu for O), and a mole of water molecules would weigh 18.02 grams.

Mass Number Of Chlorine

The original periodic table of the elements published by Dimitri Mendeleev in 1869 arranged the elements that were known at the time in order of increasing atomic weight, since this was prior to the discovery of the nucleus and the interior structure of the atom. The modern periodic table is arranged in order of increasing atomic number instead.