What happens to the total mass of the chemicals involved in the reaction as the reaction proceeds?

Explanation:

According to the law of conservation of mass, mass can neither be created nor it can be destroyed. It can only be transformed from one form to another.

For example,

Therefore, mass of reactants is as follows.

Mass of Na = 23 g/mol

Mass of Cl = 35 g/mol

Total mass of the reactants is (2 \times 23 g/mol) + (35 g/mol \times 2) = (46 + 70)g/mol = 116 g/mol

Mass of products is as follows.

2NaCl = 2 times (23 + 35) g/mol = 116 g/mol

Thus, we can conclude that the total mass of the chemicals involved in the reaction as the reaction proceeds gets transformed into other form, that is, into the products.