Which of the following reactions shows that the formation of NO2 requires
33.1 kJ/mol?
O A. N(9) +20(9) ► NO2(g) + 33.1 kJ
O B. įN2(g) + O2(g) + 33.1 kJ → NO2(9)
O c. 1 N2(9) + O2(g) NO2(g) + 33.1 kJ
OD. N(g) + O(g) + 33.1 kJ → NO2(9)