Question

Which of the following is true for all chemical reactions? The total mass of the reactants increases. The total mass of the reactants equals the total mass of the products. The total mass of the products is greater than the total mass of the reactants. The total mass of the products is less than the total mass of the reactants.

Answer 1

The total mass of the reactants equals the total mass of the products, because matter is not created or destroyed in the reaction.