2 molecules of N2, because the hydrogen is the limiting reactant, leaving there to be more N (4 molecules) so those 4 molecules create 2 N2 molecules.
The number of protons an element has is the same as the atomic number, so the element would have 86 protons.
Answer:
Explanation: See images below for explanation
Mass is not conserved in chemical reactions. Mass is therefore never conserved because a little of it turns into energy in every reaction
