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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In 1919, the temperance movement finally succeeded. they secured ratification of a constitutional amendment (the that banned alcoholic beverages. prohibition began with the 1920 passage of the which enforced the amendment.

Mason drew the cladogram shown. i give the brainliest which statements best describe the cladogram? check all that apply. reptiles are the most primitive. birds and reptiles are most closely related. frogs are more closely related to fish than birds. frogs are more closely related to birds than fish. fish are the most primitive.