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anonymous
 one year ago
Technetium99 is used for brain scans. The isotope has a halflife of 6 hours. A laboratory needs 200 g for an experiment. If shipments takes 72 hours, how much Technetium99 should be prepared so that the appropriate amount remains after shipping?
anonymous
 one year ago
Technetium99 is used for brain scans. The isotope has a halflife of 6 hours. A laboratory needs 200 g for an experiment. If shipments takes 72 hours, how much Technetium99 should be prepared so that the appropriate amount remains after shipping?

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know the functions e and ln?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think you start out by 72/6= 12 halflives

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Not even close. Do you have a e and ln in your scientific calculator.
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