Calculate ΔH for the following reaction using the given enthalpies of formation.
2NO(g) + 5O2(g) → 2NO2(g)
ΔHfNO(g) = 90.25 kJ mol-1
ΔHfNO2(g) = 33.18 kj mol-1
a. +57.07 kJ
b. -57.07 kJ
c. +114.14 kJ
d. -114.14 kJ
e. +66.36 kJ
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