Question

Nitrogen dioxide, NO2(g), is an emission resulting from the burning of gasoline in the air in an automobile engine. nitrogen dioxide contributes to the formation of smog and acid rain. it can be converted to dinitrogen tetraoxide as shown below:
2NO2(g) --> N2O4(g)

a) use Hess's law and the following equations to determine the enthalpy change for this reaction.
1) N2(g) +2O2(g) --> 2NO2(g) ΔH^o = 66.4 k/J
2) N2(g) + 2O2(g) --> N2O4(g) ΔH^o = 11.1 k/j

b) write the thermochemical equation for the overall reaction.

Answer 1

I can't believe that no one answer this question.

Answer 2

I think you reposted this same question and two people solved this question and got the answer, here is the link:
www.jiskha.com/questions/1802849/Nitrogen-dioxide-NO2-g-is-an-emission-resulting-from-the-burning-of-gasoline-in

Answer 3

thank you bob the builder, now go to sleep or else you can't build stuff with enough sleep and people will call you Bob the worksleeper not bob the builder