Multiple Choice
A sample of 131I (which has a half-life of 8.04 days) has an activity of 5.0 mCi at the time of shipment, and an activity of 4.2 mCi upon receipt in a medical laboratory. The time elapsed between the shipment and the receipt is
A) 6.8 days.
B) 6.4 days.
C) 5.0 days.
D) 2.5 days.
E) 2.0 days.
Correct Answer:
Verified
Correct Answer:
Verified
Q31: The nuclear radius of <sup>64</sup>Co is approximately<br>A)
Q32: Compared to atomic energies, nuclear energies are<br>A)
Q33: A 300-g sample of <sup>218</sup>Po undergoes
Q34: Which of the following is most likely
Q35: The graph here shows the number of
Q37: As a radioactive substance decays, its half-life<br>A)
Q38: The density of nuclear matter is of
Q39: If 30 g of substance remain from
Q40: The graphs here show the number of
Q41: The half-life of carbon-14 is about 6000