Question

what do you mean by the law of conservation of mass​

Answer 1

$\huge\mathfrak\red{ANSWER}$

✍During chemical reaction the sum of the masses of the reactants and products remains unchanged.

✍This is known as the Law of conservation of mass.

Answer 2

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.