Sharepoint 2010 web applications and app pools

Lets say I have two WFEs. i need to create 30 web applications IIS sites. how many app pools should i create? i know max 10 per server is a limit.

If i create 5 app pools on 1 wfe server, are those visible on the 2nd WFE as well or do i need to create other 5 app pools on that second wfe?

so in central admin, when i create a new web application and choose existing app pool, is the app pool dropdown going to list app pools from both wfes? or how does it work?

Thanks