Osed in Radioactive vanadium-48 decays with a half-life of 16.0 days. [Review Topics] [References] a. What is the value of k in s12 k = b. A sample contains 58.0 mg 48 V. How many decay events will be produced in the first second? Assume the atomic mass of 48 V is 48.0 u. decays/s c. A chemist obtains a fresh sample of 48 V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days Submit Answer Retry Entire Group 4 more group attempts remaining
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![[Review Topics]
[References]
Radioactive vanadium-48 decays with a half-life of 16.0 days.
a. What is the value of
k in
s12
k =
b. A sample contains 58.0 mg
48
t° V. How many decay events will be produced in the first second? Assume the atomic mass of
48 V is 48.0 u.
decays/s
c. A chemist obtains a fresh sample of 8V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall
below 25% of the initial measured value. How long does she have to do the experiment?
days
Submit Answer
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