16.\ny axis label:\nx axis label:\n17. identify if the following chemical reactions are endothermic (endo)…

16.\ny axis label:\nx axis label:\n17. identify if the following chemical reactions are endothermic (endo) or exothermic (exo).\na. burning of coal\nb. sublimation of co₂\nc. freezing of ice\nd. boiling an egg\ne. condensing water vapors to liquid

16.\ny axis label:\nx axis label:\n17. identify if the following chemical reactions are endothermic (endo) or exothermic (exo).\na. burning of coal\nb. sublimation of co₂\nc. freezing of ice\nd. boiling an egg\ne. condensing water vapors to liquid

Answer

Brief Explanations:

  • a. Burning of coal releases heat, so it is exothermic.
  • b. Sublimation of CO₂ requires heat input, so it is endothermic.
  • c. Freezing of ice releases heat as the substance changes from liquid to solid, so it is exothermic.
  • d. Boiling an egg requires heat to denature proteins, so it is endothermic.
  • e. Condensing water vapors to liquid releases heat as the substance changes from gas to liquid, so it is exothermic.

Answer:

a. exo b. endo c. exo d. endo e. exo