Is it normal for my right leg to be longer than my left leg?
It can be this certainly can be a normal variation if there are no other problems.
If it is a slight amount, yes. More than an inch, no.
sure, but not too much longer to where you have to lean
I doubt that it is normal, but it is something you can live with happily.
If your under 18, it's normal because you are still growing. :)
It is not normal actually they must be equal. Yes it may be congenital deformity. If you feel you are walking properly then use corrected shoes or footwear.