Answer:
1019.6 moles of Al.
Explanation:
4Al +3O2 → 2Al2O3
You have 509.8 g moles of Al2O3. While balancing the equation, you got 2 moles of Al2O3 and 4 moles of Al,
so "4 mol Al gives 2 mol Al2O3
After you cancel out the units of measurement to check the order of the conversion, multiply 509.8 g with 4 and then divide the answer by 2.
.= (509.8 x 4) / 2
= 2039.2 / 2
= 1019.6 moles of Al.
