The compound hydrazine is used as a rocket fuel. Its structural formula is shown. One reaction of hydrazine is shown below. The reaction is exothermic. $\text{N}_2\text{H}_4 \rightarrow \text{N}_2 + 2\text{H}_2$ The bond energies are listed in the table. What energy change does this reaction have?
- A$-339\,\text{kJ/mol}$
- B$-97\,\text{kJ/mol}$
- C$+97\,\text{kJ/mol}$
- D$+339\,\text{kJ/mol}$