what is the mass number of a carbon-13 (13c) atom???

Answer: 13.003355[1] u
Question: who plays seven of nine on star trek voyager?

Answer: Jeri Lynn Ryan
Answer this question: who does the voice of dracula in hotel transylvania 3??

Adam Sandler
Q: who wrote the song the story sung by brandi carlile?A: Phil Hanseroth
Input: what is the name given to the rows in the periodic table?

Output: periods
who discovered the atom is mostly empty space???

Answer:
Geiger and Marsden