Which of the following statements is true about chemical reactions?

endothermic reactions absorb heat and exothermic reactions give off heat

exothermic reactions absorb heat and endothermic reactions give off heat

endothermic and exothermic reactions absorb heat

endothermic and exothermic reactions give off heat

Respuesta :

Endothermic reactions absorb heat and exothermic reactions give off heat
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