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Chemistry Equations Help

Hey everyone,

I did some of the problems that I listed in my previous thread, however, I'm still stuck on these problems which require me to write expressions. Does anyone know the equations I need to write for these problems?

http://imgur.com//RdZ0DJV
http://imgur.com//EztiY77

Thanks so much.

Also, here is the first page of the handout in case you need some context, I already did this, however, I took the picture before I did the problem:

http://imgur.com//gH28uhH
http://imgur.com//2NS0nVZ

Thanks again