Which statement best describes balancing equations and the law of conservation of mass?

B. The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and in the products.... Show More

The correct answer is: "The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and  in the products"Explanation: The Law of Conservation of Matter is also called the law of conservation of mass or the Law of Lomonósov-Lavoisier. This law postulates that "the mass is not created or destroyed, only transformed." This means that the reagents interact with each other and form new products with physical and chemical properties different from those of the reagents because the atoms of the substances are ordered differently. But the amount of matter or mass before and after a transformation (chemical reaction) is always the same, that is, the quantities of the masses involved in a given reaction must be constant at all times, not changing in their proportions when the reaction ends. In other words, then the mass before the chemical reaction is equal to the mass after the reaction. The exception to the rule is nuclear reactions, in which it is possible to convert mass into energy and vice versa.An example of this law is the combustion of hydrocarbons, in which the fuel can be seen burning and "disappearing", when in truth it will have been transformed into invisible gases and released energy.This law is what allows the equations to be balanced or chemical reaction, to maintain the conservation of mass.So, the correct answer is "The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and  in the products"... Show More

The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and in the products- second choice... Show More

The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and  in the productsExplanation:In balancing equation, you want equal atoms on both side. Law of conservation says whatever mass you start with will be the same mass you end with thus, reactant and product masses should equal as well!... Show More

The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and  in the productsExplanation:Law of Conservation of mass : It states that mass in an isolated system can neither be created nor destroyed during any physical and chemical change. This is discovered by Antoine LavoisierorTotal mass of reactants is equal to total mass of products in a chemical reaction.Balancing equation follow law of conservation of mass. Consider the following equation :Reactants : and Reactants : Number of hydrogen(H) atom = 2(2) = 4                    Number of oxygen (O) atom   = 2Products  :                   : Number of hydrogen (H) = 2(2) = 4                 : Number of oxygen (O)    = 2(1) = 2Total number of hydrogen, and oxygen in the reactant side is equal to total number of hydrogen, and oxygen in the product side.... Show More

Answer;The number of atoms is the same in the reactants and in the products, and the total mass is the same in the reactants and in the products.Explanation;According to the law of conservation of mass, in every chemical reaction, the same mass of matter must end up in the products as started in the reactants. Balanced chemical equations show that mass is conserved in chemical reactions.The chemical equation needs to be balanced so that it follows the law of conservation of mass. A balanced chemical equation occurs when the number of the different atoms of elements in the reactants side is equal to that of the products side.... Show More