Question

what does the law of conversion of mass state

Answer 1

The law of conservation of mass states that in a closed system, the mass of substances involved in a chemical reaction remains constant, regardless of the processes happening within the system. In other words, mass can neither be created nor destroyed; it can only change forms. This principle was formulated by Antoine Lavoisier in the late 18th century and is foundational to chemistry, indicating that the total mass of reactants in a chemical reaction will equal the total mass of the products.