Answer:
There are three nitrogen atoms in the products. The law of conservation of mass states that the amount of substance should be the same before and after a reaction. ... balanced because the total number of oxygen atoms is 3.
Explanation:
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<h2><em><u>hope</u></em><em><u> it</u></em><em><u> helps</u></em></h2>
So they can prove there hypothesis is correct or have an understanding.