Question

State why the shown chemical change shows slight errors in the Law of Conservation of Mass : 2Mg + O2 -----------> 2MgO + Heat + Light​

Answer 1

Answer:

2MgO2

Explanation:

as oxygen nolecules are not balenced

Answer 2

This is not satisfying the law of conservation of mass beacuse the number of molecules on reactant and product side are not equal.
On reactant side molecules of magnesium is 2 and oxygen is 2 but on product side magnesium is 2 but oxygen is 1