Chemistry

Alexia Morris

17 June, 19:16

Which balanced equation represents an endothermic reaction?

(1) C (s) + O2 (g) → CO2 (g)

(2) CH4 (g) + 2O2 (g) → CO2 (g) + 2H2O (l)

(3) N2 (g) + 3H2 (g) → 2NH3 (g)

(4) N2 (g) + O2 (g) → 2NO (g)

+2

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