Question

what is the law of conservation of mass​

Answer 1

Answer:

the law of conservation of mass states that in a chemical reaction,the mass of the reactant should always be equal to the mass of the product.

basically,  the mass of the system must remain constant over time.

or just simply state ,mass neither can be created nor be destroyed.

Answer 2

Answer:

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.