Question

Based on the Law of Conservation of Mass, what's the minimum amount of Magnesium that will react with 32g of Oxygen to produce 80.6g of Magnesium Oxide?​

Answer 1

mass before reaction = mass after reaction

Mg + O = MgO

Mg + 32 = 80.6

Mg = 80.6 - 32 = 48.6 (a)