B , your products are on the right side of the reaction. The reactants are on the left side
5. is b
but im not sure about 4
hope this helps
The answer to this question is 5
Many nitrogen atoms have seven neutrons<span> (14-7 = 7). Some atoms of nitrogen, however, have eight electrons. They are atoms of N-15, an isotope of nitrogen. In a neutral atom, the number of protons must equal the number of electrons.</span>
