1. Understand the Formula:
* Al3O2 represents a single molecule of the compound aluminum oxide.
* The subscript numbers indicate the number of each type of atom in the molecule: 3 aluminum atoms (Al) and 2 oxygen atoms (O).
2. Multiply by the Coefficient:
* The coefficient "2" in front of the formula means we have two of these molecules.
3. Calculate the Total Atoms:
* Aluminum: 2 molecules * 3 Al atoms/molecule = 6 Al atoms
* Oxygen: 2 molecules * 2 O atoms/molecule = 4 O atoms
Therefore, there are a total of 10 atoms in 2 Al3O2 (6 aluminum atoms + 4 oxygen atoms).
