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Category > Chemistry Posted 27 Apr 2017 My Price 4.00

Potassium-42

I am getting 6% as my answer after first converting hours to days, then dividing 2.1 days by the conversion answer. Next I utilize the (1/2)n radiation equation ((1/2) raised 4.0645158), but I do not understand why the answer is 6.25% because after I multiply by 100, I am getting 5.97 which is approximately 6%. The question is as follows:

 

Potassium-42 is a radioisotope that nutritionists use to determine whether the body is effectively using potassium at the cellular level. The half-life of potassium-42 is 12.4 hours. Assuming that a patient's cells assimilate all the potassium chloride tagged with potassium-42, approximately what percentage of the dose remains in 2.1 days?

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SuperTutor
(15)
Status NEW Posted 27 Apr 2017 08:04 AM My Price 4.00

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