Question

4 Alz(CO3)3
Do u multiple the 4 with the stuff in the parentheses ?

Answer 1

a total of 56 atoms

Explanation:

Aluminum carbonate is the compound

Yes, you multiply what is inside the parentheses times 4 and also times 3. That is:

8 atoms of Al

36 atoms of Oxygen

and

12 atoms of Carbon

giving a total of 56 atoms