Use the information in the table to answer the question.
Reaction Bonds Present Energy of Bonds Broken and Formed (kJ/mol)
C + O2 → CO2
O=O
2 C=O
498
1478
N2 + O2 → 2NO
N≡N
O=O
2 N=O
946
498
1214
S + O2 → SO2
O=O
2 S=O
498
1044
2CO + O2 → 2CO2
2 C≡O
O=O
4 C=O
2148
498
2956
Which reaction is endothermic?