Question

in a chemical reaction, the total mass of the reactants is 10.0 grams. after the reaction, the total mass of the products must be
oa. exactly 20.0 grams
ob. exactly 10.0 grams
oc. more than 10.0 grams
od. less than 10.0 grams

Explanation:

According to the law of conservation of mass in chemical reactions, the mass of reactants is equal to the mass of products. Here, the mass of reactants is 10.0 grams.

Answer:

B. exactly 10.0 grams