Answer:
1 mol of Mg
Explanation:
2Mg + O₂ → 2MgO
2 moles of magnesium react with 1 mol of oxygen, to produce 2 mol of magnesium oxide.
16 g / 32 g/m = 0.5 moles of O₂
If 1 mol of oxygen react with 2 mol of Mg
0.5 moles of O₂ will react with 1 mol of Mg. (0.5 ₓ2)
