Good Riddles

Question: What is one in every doll, in every doll, in every doll?

Question: What sport starts with a T, has four letters, and is played around the world?

Question: What is thrown to both kings and beggars?

Question: A very famous chemist was found murdered in his kitchen today. The police have narrowed it down to six suspects. They know it was a two man job. Their names: Felice, Maxwell, Archibald, Nicolas, Jordan, and Xavier.

A note was also found with the body: '26-3-58/28-27-57-16'.

Who are the killers?

Question: Something different to show every week, but I'm still the same place.
If you're eating it's probably butter that you taste.

What am I?