The relative formula masses of four compounds are shown. A student has a $1.0\,\text{g}$ sample of each compound. Which sample contains the greatest number of moles of oxygen atoms?
- A$\text{Al}_2\text{O}_3$, relative formula mass $102$
- B$\text{CuO}$, relative formula mass $80$
- C$\text{H}_2\text{SO}_4$, relative formula mass $98$
- D$\text{HNO}_3$, relative formula mass $63$