Question

Strength of Cobalt-60 Source

Due this Friday, Apr 20 at 11:59 pm (EDT)

Many radioisotopes have important industrial, medical, and research applications. One of these is ⁶⁰Co, which has a half-life of 5.20 years and decays by the emission of a beta particle (energy 0.310MeV) and two gamma photons (energies 1.17 MeV and 1.33 MeV). A scientist wishes to prepare a ⁶⁰Co sealed source that will have an activity of at least 10.4 Ci after 24.0 months of use.
If the activity is 10.4 Ci, how many ⁶⁰Co atoms are in the source?

Tries 0/10

What is the minimum number of nuclei in the source at the time of creation?

Tries 0/10

What is the minimum initial mass of ⁶⁰Co required?

Answer 1