Question

a lizard egg needs a temperature of 26-30°c to hatch properly. you place the egg next to a pouch of water which is 22°c. what type of chemical do you need for the egg?
a citric acid because it will create an endothermic reaction.
b salt because it will create an exothermic reaction.
c sugar because it will create an endothermic reaction.
d calcium chloride because it will create an exothermic reaction.

Explanation:

The lizard egg needs a temperature increase from 22°C to 26-30°C, so an exothermic process (releases heat) is required. Citric acid reactions and sugar dissolution are endothermic (absorb heat, lower temperature). Table salt (NaCl) dissolution is nearly temperature-neutral. Calcium chloride dissolving in water is a strongly exothermic process that releases heat to raise the temperature.

Answer:

D. Calcium chloride because it will create an exothermic reaction.