Question

state the law of conservation of mass as applicable in a chemical reaction

Answer 1

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

Answer 2

mass can neither be created or nor
be destroyed
the mass of product in chemical reaction must equal the mass of reactants