Finding how much heat released by evaporation of water

[ChiralSuperfields]

Homework Statement

Please see below

Relevant Equations

Please see below

For this,

Dose anybody please know where they got the 120W from?

Many thanks!

 

[haruspex]

There must be more context to the question.

 

[ChiralSuperfields]

There must be more context to the question.

Thank you for your reply @haruspex!

I'm very sorry, but somehow, I missed the slide before. I think I understand where they got the 120W from now.

Thank you for your help!

 

[nasu]

What releases the heat? The water needs to absorb energy in order to evaporate. Evaporation does not release heat.

 

[ChiralSuperfields]

What releases the heat? The water needs to absorb energy in order to evaporate. Evaporation does not release heat.

Thank you for your reply @nasu!

The question was about the heat released from the human body I recall. So I think the water absorbs the heat from the human.

Many thanks!