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consider the transition metal gallium. The gallium-67 isotope (67Ga) is a radioactive element often used in...

consider the transition metal gallium. The gallium-67 isotope (67Ga) is a radioactive element often used in hospitals to image inflammation and chronic infections via a technique called a gallium scan. 67Ga has a half-life equal to 3.3 days and decays to 67Zn via a process called electron capture, which follows first order kinetics.

How long will it take for the amount of 67Ga in your sample to drop to 6.25%?

a. 3.3 days b. 9.9 days c. 13.2 days d. 16.5 days e. 19.8 days

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