Multiple Choice
A radioactive sample is detected to produce 2500 decays per minute at 6:00 p.m.and 150 decays per minute at 11:00 p.m.the same day.What is the half-life of the sample?
A) 2.81 hrs
B) 0.56 hrs
C) 1.23 hrs
D) 1.77 hrs
E) 0.89 hrs
Correct Answer:
Verified
Correct Answer:
Verified
Q4: Use the following atomic masses. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6079/.jpg"
Q5: The volume of a nucleus is directly
Q6: In gamma-decay a nucleus in an
Q7: Which of the following common isotopes has
Q8: Cesium-137 has a half-life of 31.0 y.The
Q10: Oxygen-15 is a <span class="ql-formula"
Q11: A radioactive substance in the laboratory has
Q12: A sample of <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB6079/.jpg" alt="
Q13: The half-life of a radioactive substance is
Q14: When an alpha particle (<sup>4</sup>He)with a kinetic