Cerium-143 is a radioactive isotope that decays to produce praseodymium-143. The half-life for cerium-143 is approximately 33 hours. If 12.5 g cerium-143 remains from a 100-g sample, which statement is true? Select all that apply.
A.
Cerium-143 decayed for 132 hours.
B.
Cerium-143 decayed for 99 hours.
C.
Four half-lives have passed.
D.
Three half-lives have passed.
E.
Cerium-143 decayed for 166 hours.
F.
Two half-lives have passed.
Answers: 1
Chemistry, 21.06.2019 18:30, tae8002001
How much energy moves onto the next level, in an energy pyramid
Answers: 1
Chemistry, 21.06.2019 22:40, wiltseliz4800
What does the process of natural selection involve
Answers: 1
Chemistry, 22.06.2019 04:00, heavyhearttim
4. absorption has the highest risk of overdose due to increased potency. a. rectal b. oral c. transdermal d. intranasal
Answers: 2
Cerium-143 is a radioactive isotope that decays to produce praseodymium-143. The half-life for ceriu...
Social Studies, 05.11.2020 14:00
Mathematics, 05.11.2020 14:00
English, 05.11.2020 14:00
Health, 05.11.2020 14:00
Mathematics, 05.11.2020 14:00