What is the number of oxygen atoms in the chemical reaction 3CuSO4 plus 2Ala12(SO4)3 plus 3Cu?

To determine the number of oxygen atoms in the reaction, we first need to identify the oxygen atoms in each compound. In 3CuSO4, there are 4 oxygen atoms per CuSO4 unit, contributing 12 oxygen atoms (3 × 4). In 2Ala12(SO4)3, each sulfate (SO4) has 4 oxygen atoms, so 2(SO4) contributes 8 oxygen atoms (2 × 4). Therefore, the total number of oxygen atoms in the reaction is 12 + 8 = 20 oxygen atoms.