Which of the following reactions is endothermic?

h2(g) + ½ o2(g)h2o(g),h = -57.82 kcal
½n2(g) + o2(g) + 8.1 kcalno2(g)
½ n2(g) + 3/2 h2(g)nh3(g) + 11.0 kcal
c(diamond)+ o2(g)co2,h = -94.50 kcal

The best and most correct answer among the choices provided by your question is the second choice.

The reaction ½N2(g) + O2(g) + 8.1 kcalNO2(g) is endothermic among .the given choices.

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Afraidsugar lol it’s the third one