Respuesta :
Conservation of mass 100g reactants = 100g products. That is total mass of the reactants and products
Answer: A) the combined mass of the products is 100 grams.
Explanation: the law of conservation of mass (or matter) says that the total mass of any material system is neither increased nor diminished by reactions between the parts, this means that when we have a reaction, the mass combined mass of the reactants will be exactly the same as the combined mass of the products, so the correct answer is the corresponding to option A.