Question

"A chemical reaction occurs between iron (Fe) and chlorine gas (Cl2). A scientist spills chemicals on his notes, erasing what product formed from the reaction. The notes over the reactants can be seen and read: 2Fe + 3Cl2 → What would you predict the molar mass, in grams per mole, of the products to be? "

Answer 1

The Law of Conservation of Mass tells us that the mass of the reactants must equal the mass of the products. Therefore, the molar mass of the reactants should equal the molar mass of the products.