To determine the number of moles of oxygen atoms in 1 mole of copper(II) sulfate (CuSO₄), we need to look at the molecular formula and identify the number of oxygen atoms within one molecule of CuSO₄.
1. Molecular formula of CuSO₄: Copper(II) sulfate is represented as CuSO₄.
2. Identifying the elements and their counts in CuSO₄:
- Cu: There is 1 atom of copper (Cu).
- S: There is 1 atom of sulfur (S).
- O: There are 4 atoms of oxygen (O).
3. Understanding the mole concept:
- 1 mole of any substance contains Avogadro's number of molecules or atoms, which is [tex]\(6.022 \times 10^{23}\)[/tex] entities.
- Therefore, 1 mole of CuSO₄ contains [tex]\(6.022 \times 10^{23}\)[/tex] molecules of CuSO₄.
4. Calculating the number of moles of oxygen atoms:
- Since each molecule of CuSO₄ contains 4 oxygen atoms, 1 mole of CuSO₄ will contain 4 moles of oxygen atoms.
Thus, the number of moles of oxygen atoms in 1 mole of copper(II) sulfate (CuSO₄) is:
```
4 moles of oxygen atoms.
```
Therefore, the correct answer is:
```
4 moles of oxygen atoms.
```
