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anonymous

  • one year ago

Technetium-99 is used for brain scans. The isotope has a half-life of 6 hours. A laboratory needs 200 g for an experiment. If shipments takes 72 hours, how much Technetium-99 should be prepared so that the appropriate amount remains after shipping?

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  1. anonymous
    • one year ago
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    Do you know the functions e and ln?

  2. anonymous
    • one year ago
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    no

  3. anonymous
    • one year ago
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    I think you start out by 72/6= 12 half-lives

  4. anonymous
    • one year ago
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    Not even close. Do you have a e and ln in your scientific calculator.

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