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Author Question: Fluorine-18 undergoes positron emission with a half-life of 1.10 102 minutes. If a patient is given ... (Read 125 times)

tichca

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on: Nov 18, 2019

Question 1

Give the maximum age that can be estimated from radiocarbon dating.
◦ 1 000 000 years
◦ 100 000 years
◦ 5000 years
◦ 50 000 years
◦ 10 000 years

Question 2

Fluorine-18 undergoes positron emission with a half-life of 1.10 × 102 minutes. If a patient is given a 248 mg dose for a PET scan, how long will it take for the amount of fluorine-18 to drop to 83 mg? (Assume that none of the fluorine is excreted from the body.)
◦ 3.0 × 102 minutes
◦ 1.7 × 102 minutes
◦ 1.3 × 102 minutes
◦ 99 minutes
◦ 2.1 × 102 minutes
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Marked as best answer by tichca on Nov 18, 2019

aburgess

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Reply #1 on: Nov 18, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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tichca

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Reply 2 on: Nov 18, 2019
Excellent

dyrone

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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