Number 13 is D. Mendeleev. He was a Russian chemist and inventor who formulated the periodic table.
12.01 amu
Work:
(12.000 × .9889) + (13.003 × .0111) = 12.01
- turn the precents into decimals
Answer:
Physical Property
Explanation:
Magnetism is temporary untill you seperate the objects. There is no chemical change involved before, after, or during.