21. Nuclear Chemistry
Rate of Radioactive Decay
6PRACTICE PROBLEM
Caesium-137 decays mainly by beta emission and yields Barium-137 and has a half-life of 30.05 years. A sample of a salt contains 156.0 mmol 137Cs and 55.0 mmol of 137Ba. How old is the salt sample?
Caesium-137 decays mainly by beta emission and yields Barium-137 and has a half-life of 30.05 years. A sample of a salt contains 156.0 mmol 137Cs and 55.0 mmol of 137Ba. How old is the salt sample?