A by-product of some fission reactors is the isotope 11eb7e53_2121_2de6_bc75_dbfea47c5107_SM7473_11 , which is an alpha emitter with a half-life of 24 000 years: 11eb7e53_2121_2de7_bc75_ed31700236c1_SM7473_11 Consider a sample of 1.0 kg of pure 11eb7e53_2121_2de8_bc75_d57d9e4c09f1_SM7473_11 at t = 0. Calculate (a) the number of 11eb7e53_2121_2de9_bc75_f9bc0386fc04_SM7473_11 nuclei present at t = 0 and (b) the initial activity of the sample. (c) How long does the sample have to be stored if a "safe" activity level is 0.10 Bq

College Physics 10th Edition by Raymond Serway,Chris Vuille

النسخة 10الرقم المعياري الدولي: 978-1285737041

College Physics 10th Edition by Raymond Serway,Chris Vuille

النسخة 10الرقم المعياري الدولي: 978-1285737041

تمرين 65

A by-product of some fission reactors is the isotope

, which is an alpha emitter with a half-life of 24 000 years:

Consider a sample of 1.0 kg of pure

at t = 0. Calculate (a) the number of

nuclei present at t = 0 and (b) the initial activity of the sample. (c) How long does the sample have to be stored if a "safe" activity level is 0.10 Bq

التوضيح

موثّق

(a)
The mass of the atom is .
Convert ...