Question

I am not sure how to solve this.

What is ∆Hºrxn at 298 K? (Hint: You will need to balance the reaction first!)

N2H4(g) + N2O4(g)N2(g) + H2O(g)

N2H4(g) N2O4(g) N2(g) H2O(g) ∆Hºf (kJ/mol) 95.40 9.55 0 -241.82