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)
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