Finding latent heat of vaporisation

[Bolter]

Homework Statement

Finding latent heat of vaporisation

Relevant Equations

Surface energy per unit area?

Can anyone please help me on how to tackle this question?

I really do not have any clue to make a start on it?

Thanks for any help!

 

[BvU]

Hi Boler, !

Sorry, no can do. Your own effort is missing :
//www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

 

[Bolter]

Hi Boler, !

Sorry, no can do. Your own effort is missing :
//www.physicsforums.com/threads/homework-help-guidelines-for-students-and-helpers.686781/

Ok so I have made an attempt at it, and this is what I have got from using the following equation as shown.

Have I done this right?

 

[BvU]

Looks good to me.

@Chestermiller ?