the answer is 0.000097 KM
Neutrons actually don't carry an electrical charge, which is why they are called neutrons because they are "Neutral".
Standard equation would be N2(g)+3H2(g)==>2NH3(g), so through stoichiometry, (4 mol N2)(2mol NH3/1 mol N2), assuming excess H2, would yield 8 moles of NH3.
X=107 because the sides of a hexagon must add up to 720