Final answer:
When you have 8 molecules of copper II sulfate, you have 8 atoms of copper, as each molecule of copper II sulfate contains only one atom of copper.
Step-by-step explanation:
If you have 8 molecules of copper II sulfate (CuSO4), the number of atoms of copper you have is determined by the composition of a single molecule of copper II sulfate. Each molecule of copper II sulfate contains one atom of copper, as indicated by the formula 'Cu' in CuSO4. Therefore, if you have 8 molecules of CuSO4, you simply multiply the number of molecules by the number of copper atoms per molecule:
8 molecules of CuSO4 × 1 atom of Cu per molecule of CuSO4 = 8 atoms of Cu
So, you have 8 atoms of copper.