Question

How does the following equation demonstrate the law of conservation of mass? 22 + 2 → 22

A. The number of atoms of each element is the same on the reactant side as the product side.
B. The number of atoms on the reactant side is more than the number of atoms on the product side.
C. The number of water molecules is the same on the reactant and product side.
D. The number of atoms on the reactant side is less than the number of atoms on product side.

Answer 1

A. The number of atoms of each element is the same on the reactant side as the product side.

Step-by-step explanation:

The equation demonstrates the law of conservation of mass in such a way that the number of atoms of each element is the same on the reactant side as the product side.

According to the law of conservation of mass "matter is neither created nor destroyed in a chemical reaction but they are changed from one form to another".

• By virtue of this, the number of moles of atoms on both sides of the expression must be the same.