No hope whatsoever, no. If you were serious about trying to dry it out and use it as a tiny internet-only tablet, well, you'd need some MAJOR luck and something a BIT more, shall we say, effective than dusty, scratchy rice.
You'll want some desiccant, like you can buy at Harbor Freight or any other major hardware store -- they sell it to dry out the air going into the lines for shops that use pneumatic tools. Pull the battery, leave it open, and put it in a sealed plastic bag. Leave it alone for a week. Then you can check to see if the water's all gone.