I'm assuming you mean "Can a sex offender own a firearm?" If so, the answer is no. Felons cannot own firearms.
No
You can pawn a firearm which you own.. if you pawn a firearm which you do not own, the legitimate owner may report it stolen, and you will be prosecuted.
No. No convicted felon can ever lawfully be in possession of a firearm.
No
It is possible, yes.
No.
No
If you have ever been convicted and served time, you cannot own a firearm. Double check, I could be wrong. Google your question. I am a felon and will go to federal prison if I have a firearm.
You can't really "check online" but if you qualify to own a firearm anywhere in the U.S. you can own one in Florida. Basically, you have to be a non-felon and have disqualifying misdemeanors.
No. You can own a firearm.
No.