How to approach calculations involving energy changes in regards to per(...unit)

[dream chaser]

Hi Guys,

I am struggeling to understand calculations regarding per something. This per could be volume, mass,etc... If you want to know, it is chapter 3.5 of the heinemann Unit 3 and 4 Chemistry Book. I would really appreciate it if someone can talk me through the process of how to calculate them. I know it depends on what the per is, but a general explanation on the whole topic would really help me out. Some of the questions regarding this topic are on the Chemistry QandA thread under my name if you want to see.

Thanks

[Srd2000]

Hey hey, hope this isn't too late of a response. Sorry if it

I'm happy to provide some help if you want to PM me and send an example. If not, best of luck to you in chemistry!!