Question

How does a balanced chemical equation show the conservation of mass?

OA. It shows that the mass of the reactants is greater than the mass
of the products when gases are produced by the reaction.
OB. It shows that the number of each type of atom stays the same.
O C. It shows that the total number of moles of substances stays the
same.
OD. It shows that the mass of the products is greater than the mass of
the reactants when a reaction increases the moles of substances.

Answer 1

option c is the correct one, we add some number like 2,3 or 4 in front of the reactant or product to make the number of the element(s) equal on both the product and reactant side