NH₄⁺(aq)+NO₃⁻(aq) → NH₄NO₃(s) How much energy is released when 3 moles of NH₄+ react?

1) -25.69 kJ
2) -51.38 kJ
3) -77.07 kJ
4) -102.76 kJ

I think the answer is number 3

1. and 2. question: in which equation? or i don't understand you, 3. a), 4. c), 5. c), 6. b), 7. d), 8. d) if small number is underlined(behind symbol) , b) if big number is underlined(in front of symbol)9. what is underlined there? 10. c)