ANSWER
Endothermic reaction
EXPLANATION
Given that;
[tex]\text{ H}_2O_{(l)}\text{ + 40.7KJ }\rightarrow\text{ H}_2O_{(g)}[/tex]In the reaction above, there is a transition from liquid water to steam. This phase change is called boiling.
During the process, heat is absorbed from the surroundings.
Therefore, the reaction is an endothermic reaction.
