safikul: stupid question tyler: stupid answer. it's like asking "how much a car costs" and answering "$8k".
Depends on: landing pages rankings traffic sources click through rate. You could earn $0 or you could earn $1000
Probably nothing unless you are an expert in this subject and can write many pages of original content. Copy from the internet and you will lose your account.
I have heard that mesothelioma get's about $5-$25 a click, but that was in a good economy. You also need to have good SERP's so large people related to mesothelioma will want to advertise on your site and pay the "big bucks" lol
Unless your blog already has a high ranking, you would probably be better off working with "lower hanging fruits" - keywords with less competition. It seems like everyone and their dog is starting mesothelioma blogs these days.
I totally agree with Crafy Blogger! Go after something less competitive. I would try to find something in the financial sector where everyone isn't trying to jump on the bandwagon.