What Is The Molar Mass Of AuCl3?

The molar mass of AuCl3 (gold(III) chloride) is 303.33 g/mol. This can be calculated by adding the atomic masses of one gold atom (Au, atomic mass = 196.97 g/mol) and three chlorine atoms (Cl, atomic mass = 35.45 g/mol) together and multiplying the sum by 3 to account for the three chlorine atoms in the compound.

Calculation:

Molar mass of AuCl3 = (1 x atomic mass of Au) + (3 x atomic mass of Cl)

= (1 x 196.97 g/mol) + (3 x 35.45 g/mol)

= 196.97 g/mol + 106.35 g/mol

= 303.33 g/mol