CK-12 Foundation
Ck 12: Chemistry: Atomic Mass Unit
[Free Registration/Login may be required to access all resource tools.] Definition of atomic mass unit is discussed.
Illustrative Mathematics
Illustrative Mathematics: F Le Carbon 14 Dating in Practice Ii
This problem introduces Carbon 14 dating which is used by scientists to date certain organic material. This version is based on the ratio of Carbon 14 to Carbon 12, which decreases at a constant exponential rate after an organism dies....