How Do You Solve Enthalpy Cycle Problems in Chemistry?

[yecko]

Homework Statement

http://i.imgur.com/rNoD3Lm.png

Homework Equations

Conservation of energy in an enthalpy cycle

The Attempt at a Solution

I can't complete draw the enthalpy cycle!

http://upload.lsforum.net/users/public/l50630IMG_4306s76.jpg

Can anyone help me? Thank you very much!

 

[Chestermiller]

What's an enthalpy cycle?

 

[yecko]

What's an enthalpy cycle?

That means the enthalpy changing route
like what i have written for this question... but i believe i have done something wrong in that... because that doesn't seem to form the product as mentioned in the required chemical equation

 

[mjc123]

Draw an arrow from top left to bottom right. What have you got?