Final answer:
The mass of a BrCl3 molecule is calculated by summing the atomic mass of bromine with three times the atomic mass of chlorine. Specific masses of different isomers were not provided in the information given.
Step-by-step explanation:
Masses of BrCl Molecules
The question pertains to the possible isomers of a complex containing bromine and chlorine and asks about the masses of these BrCl molecules. While the provided information discusses geometrical isomers, formal charges, and exercises related to calculating atomic masses and mole concepts, it doesn't directly give the masses of BrCl molecules. To determine molecular mass, one would typically sum the atomic masses of the constituent atoms taken from the periodic table. As such, the correct mass of a BrCl molecule (BrCl₃) would involve adding the atomic mass of bromine (Br) with three times the atomic mass of chlorine (Cl).
Atomic mass of Br (from IUPAC average): 79.904 amuAtomic mass of Cl: 35.453 amu
For BrCl₃, this would be: 79.904 + (3 × 35.453) amu
Please note, if you are inquiring about different molecules or isomers involving bromine and chlorine, the mass may differ based on the particular atoms and structure in question.