The chemistry of nitrogen oxides is very versatile. given the following reactions and their standard enthalpy changes,

(1) no(g) + no
2
(g)
→
n
2
o
3
(g) ;
δ
h
o
r
x
n
= -39.kj

(2) no(g) + no
2
(g) + o
2
(g)
→
n
2
o
5
(g) ;
δ
h
o
r
x
n
= -112.5 kj

(3) 2no
2
(g)
→
n
2
o
4
(g) ;
δ
h
o
r
x
n
= -57.2 kj

(4) 2no(g) + o
2
(g)
→
2no
2
(g) ;
δ
h
o
r
x
n
= -114.2 kj

(5) n
2
o
5
(s)
→
n
2
o
5
(g) ;
δ
h
o
s
u
b
l
= 54.1 kj

calculate the heat of reaction for n
2
o
3
(g) + n
2
o
5
(s)
→
2n
2
o
4
(g)

δ
h = _ _ _ _ _ kj