Resident Evil 3: Nemises GC Q&A

Q:

Where is the gasoline canister?

Q:

Wat is the code for the thing in the police department?

Q:

I am tryin to get a rocket lancher but when I use the faclitiy key it wont unlock it what do I do?

Q:

Do the locker on the basement 3 of the hospital that cannot be opened have some kind of a special key to open it?

Q:

Where we can get the battery that can operate the elevator?