when two substances react chemically to produce a new substance, what is true of the mass of the two substances compared to the mass of the new substance
According to the Law of conservation of mass in a chemical reaction, mass can neither be gained or lost.
Therefore, the mass of the reactants will be equivalent to the mass of the product. Conservation of mass is ensured in a chemical reaction by making the chemical equation balanced.
Therefore, in this case, the mass of the the two substances will be equal to the mass of the new substance.
