Chemistry, 05.06.2020 04:59 gracedaniels68

PLEASE HELP! IM BEING TIMED! Which reaction is exothermic?

CH4 + 2O2 Right arrow. CO2 + 2H2O + 891 kJ
NH4NO3 + H2O + 25 kJ Right arrow. NH4+(aq) + NO3-(aq)
2H2O + 286 kJ Right arrow. 2H2 + O2
N2 + O2 + 181 kJ Right arrow. 2NO

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PLEASE HELP! IM BEING TIMED! Which reaction is exothermic?

CH4 + 2O2 Right arrow. CO2...