Question
Q1) If there are 100 radioactive atoms with a half-life of 30 seconds, how many radioactive atoms will remain after one half-life (30 seconds)? How many will remain after two half-lives (60 seconds)? Three half-lives?
So basically, after 30 seconds it will be 50.After 60 sec. 25 and after 90 sec. it will be 12.5...?
am I right?
Q2) Suppose you analyzed a sample of isotope A. It contained 25 radioactive isotope A atoms, and 103 stable daughter atoms. Approximately how old is the sample?
So basically, after 30 seconds it will be 50.After 60 sec. 25 and after 90 sec. it will be 12.5...?
am I right?
Q2) Suppose you analyzed a sample of isotope A. It contained 25 radioactive isotope A atoms, and 103 stable daughter atoms. Approximately how old is the sample?