What is the nutritional value and chemical value of mice?

Wow! I guess most people don't really consider the nutritional value of mice as they are not commonly eaten these days.

Perhaps the best way to get an answer to your question would be to consult a specialist in keeping snakes as pets, as snakes are often fed mice as part of their diet.

For example, here's a forum thread discussing the nutritional value of mice vs rats: http://www.reptileboards.com/threads/mice-vs-rats-nutritional-values.35171/

You might also want to try out food blogs that deal with unusual dishes. Here's one about a (admittedly tasty-sounding) mouse dish from Southeast Asia: http://www.seriouseats.com/2008/03/eating-mice-can-be-rather-nice.html

Bon appetite!