Physics, 08.06.2021 18:50, alexandroperez13

Two examples of chemical reactions that involved a thermal energy change: 1. NH4NO3 (s) + heat ---> NH4+ (aq) + NO3 (aq)
2. CaCl2 (s) + 2H20 ---> Ca(OH)2 (aq) + 2HCl (g) + heat
Which is exothermic? Which is endothermic? How do you know?

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Two examples of chemical reactions that involved a thermal energy change: 1. NH4NO3 (s) + heat ---&...