[WalrusMan]

Anyone able to help me with this problem?  I missed some classes being sick last few weeks and I'm not sure where to go with this.  I'm trying to find something else in the book or online but I can't find much.

Calculate the total energy change for the reaction between Ca and O₂(g). 

I've got a sheet with IE₁, IE₂, IE₃, EA₁, EA₂, :delta: H_sub, :delta: H_fus, and :delta: H_v.

If you can help me, if you could first give any formulas to use and then give the answer in another post, I'd like that so I can try and calculate the answer myself.  Thanks!

[Astrokel]

Start off with writing a balanced equation and energy level diagram. Do you know how?