You are given the following data.?

Question

You are given the following data.
H2(g) + 1/2 O2(g) H2O(l) H = -285.8 kJ
N2O5(g) + H2O(l) 2 HNO3(l) H = -76.6 kJ
1/2 N2(g) + 3/2 O2(g) + 1/2 H2(g) HNO3(l) H = -174.1 kJ

Calculate the H for the reaction given below.
2 N2(g) + 5 O2(g) 2 N2O5(g)

Answer 1

Given the others that have been answered, you should be able to figure this one out on your own...Good luck.