Question

If one of the reactants in a reaction is Na2O, what is known about the products? A.There is not enough information to say anything about the products.B.The products will contain exactly 2 Na atoms and 1 O atom.C.The products will have no more than 2 Na atoms and 1 O atom.D.The products will have at least 2 Na atoms and 1 O atom.

Answer 1

D.The products will have at least 2 Na atoms and 1 O atom.

Further explanation

Conservation of mass states that

In a closed system, the masses before and after the reaction are the same

So it can be concluded

• mass of the reactants = mass of the products
• mass cannot be created or destroyed
• The number of atoms involved in a reaction remains the same⇒ number of moles also the same
• chemical equation in balanced form

So the number of atoms in reactants and products remains the same

Because one of the reactants in a reaction is Na₂O, so The products will have at least 2 Na atoms and 1 O atom.