The radioactive isotope gallium 67 is used in a medical imaging as indicated on the table above.if 55.1 milligrams of gallium 67 is administred to a patient how many milligrams are left in the body after 313.2 hours
Added by Kgahlisho M.
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2 hours. The half-life of gallium 67 is 78.3 hours. Number of half-lives = Total time / Half-life Number of half-lives = 313.2 hours / 78.3 hours Number of half-lives ≈ 4 Now, we can calculate the remaining amount of gallium 67 after 4 half-lives. Remaining Show more…
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Gallium-67 $\left(t_{1 / 2}=78.25 \mathrm{h}\right)$ is used in the medical diagnosis of certain kinds of tumors. If you ingest a compound containing 0.015 mg of this isotope, what mass (in milligrams) remains in your body after 13 days? (Assume none is excreted.)
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