Give the masses of the three most abundant Cl2O molecules

Mass is the quantity of matter present in a substance. The masses of the most abundant molecule of are 85.9325, 87.9296, and 89.9267 amu.

What are isotopes?

Isotopes are the elements of the same species with the same atomic number but differ in atomic mass and physical properties.

% abundance and mass of chlorine are:

Cl-35 = 34.9688 amu

Cl-37 = 36.9659 amu

% abundance and mass of oxygen are:

O-16 = 15.9949 amu

O-17 = 16.9991 amu

O-18 = 17.9991 amu

O -16 is the most abundant form of the oxygen isotope and Cl -35 of chlorine.

The masses of the most abundant molecule are given as:

Cl-35, Cl-35, O-16:

Cl-35, Cl-37, O-16:

Cl-37, Cl-37, O-16:

Therefore, 85.9325, 87.9296, and 89.9267 amu are the masses of the most abundant form of the molecule.

Learn more about mass here:

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Chlorine has the following % abundance and mass:  

Cl-35 = 75.76 %, 34.9688 amu

Cl-37 = 24.24 %, 36.9659 amu

Oxygen has the following % abundance and mass:  

O-16 = 99.757 %, 15.9949 amu

O-17 = 0.038 %, 16.9991 amu

O-18 = 0.205 %, 17.9991 amu

Based in the % abundance O-16 is the most abundant oxygen isotope and Cl-35 is the most abundant chlorine isotope

So the most abundant molecule of Cl2O and their respective mass are as follows:  

1) Cl-35, Cl-35, O-16

Mass = 34.9688 amu + 34.9688 amu + 15.9949 amu = 85.9325 amu

2) Cl-35, Cl-37, O-16

Mass = 34.9688 amu + 36.9659 amu + 15.9949 amu = 87.9296 amu

3) Cl-37, Cl-37, O-16

Mass = 36.9659 amu + 36.9659 amu + 15.9949 amu = 89.9267 amu