Question

what is the law of conservation of mass class 9​

Answer 1

Answer:

Laws of conservation of mass. Laws of conservation of mass. The law states that mass can neither be created nor destroyed in a chemical reaction i.e. Total masses of reactants is equal to the sum of masses of products and the masses of unreacted reactants.

Answer 2

Answer:

In a chemical reaction mass can neither be created nor destroyed.

E.g., 2Na + Cl2 ——–> 2NaCl

2 x 23 + 2 x 35.5 ——> 2(23 + 35.5)