Suppose you burn a substance in the air (reactants) and produce smoke and ash (products). the law of conservation of mass states that the mass of your reactants should be the mass of your products.
a. less than
b. more than
c. the same as suppose you burn a substance in the air (reactants) and produce smoke and ash (products). the law of conservation of mass states that the mass of your reactants should be the mass of your products.
a. less than
b. more than
c. the same as

C. The same as

Explanation:

Suppose you burn a substance in the air and the substance which burn in air is called reactants and produce smoke and ash . The smoke and ash formed after burning of substance in air is called products.

Reactant : The substance which react in chemical reaction is called reactant.

Products:The substance are produced  after chemical reaction is called  product.

We know that law of conservation of mass

Law of conservation of mass: mass of reactants  can neither be created nor destroyed in chemical reaction but it changes into mass of products . The mass of reactants is equal to mass of products.

Hence, the law of conservation states that the mass of reactants should be the same as the mass of your products.

Therefore, option C is true.

C. The same as

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.