Which type of matter can be separated by physical means? A. atom B. element C. compound D. mixture

What is the percent by mass of oxygen in fe2o3

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.

Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12