Question

question 25 of 30
why are chemical equations balanced?
a. to show that the total number and type of each atom does not change
b. to show that the total mass can only change when the total number of moles of substances changes
c. to show that the total number of moles of substances does not change
d. to show that the mass of atoms in the products must equal the mass of atoms in the reactants

Explanation:

Chemical equations are balanced based on the law of conservation of mass. This law states that matter is neither created nor destroyed in a chemical reaction. So, the total number and type of each atom must remain the same on both sides of the equation.

Answer:

A. To show that the total number and type of each atom does not change