Question

At 6:00 AM a hospital uses its cyclotron to make 1.00 milligram of the isotope fluorine-18 for use as a diagnostic tool with its PET scanner. The half-life of F-18 is 1.8 hours.

How much F-18 is left at 1:12 PM?

Answer: mm = 6.3×10⁻² mg

At midnight?

Answer: m = 9.8×10^−4 mg

Should the hospital plan to make more F-18 the next morning?

Yes

Answer 1

In order t9 find the amount of F_18 left , we have to calculate the decay constant of F-18. Then we can find amount of F-18 at a given time by the formula ,