Question

Directions: Record the number of each atom in each molecule, then record the total number of atoms in the molecule.

Answer 1

Total number of atoms = 5

Further explanation

The formula of a compound shows the composition of the constituent elements

CaCO₃ is composed of 3 types of atoms, namely Ca, C and O

The amounts of each of these atoms in the compound CaCO₃:

• Ca = 1
• C = 1
• O = 3

Then total number of atoms :

`\tt 1+1+3=5`