Question

atoms, elements, and compounds
madelyn roque
multiple - choice question
if reactions are reversed, what will the mass equal?
it is impossible to tell.
the mass of the starting substances.
the mass of the starting substances minus a little that disappears.

Explanation:

According to the law of conservation of mass in chemical reactions, mass is neither created nor destroyed. Whether a reaction is forward - or reverse - going, the total mass remains the same as the mass of the starting substances.

Answer:

The mass of the starting substances.