Misc: Which 19th century Russian chemist formulated the Periodic Table of Elements?

Questions

What was Britney Spears first song??

What song does eminem sing with Dr.Dre??

Whats the name of the song that Jay-z sings with Mariah Carey??

In what video game is it up to you to thwart an alien invasion and save Earth and Mars??

What part of the nervous system controls involuntary processes such as breathing and digestion??