Final answer:
There are 14 total atoms in the formula Al₂(CO₃)₃.
Step-by-step explanation:
The formula Al₂(CO₃)₃ indicates that there are two Al atoms, three CO₃ groups, and a total of nine oxygen atoms in one molecule of the compound. To find the total number of atoms, we can calculate:
2 Al atoms x 1 = 2
3 CO₃ groups x (1 C + 3 O) = 3 x (1 + 3) = 3 x 4 = 12
Total number of atoms = 2 + 12 = 14