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Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425

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BuyFindarrow_forward

Introductory Chemistry: A Foundati...

9th Edition
Steven S. Zumdahl + 1 other
ISBN: 9781337399425
Textbook Problem
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. The “Chemistry in Focus” segment PET, the Brain ‘s Best Friend discusses the use of radiotracers to monitor the functioning of organs or to trace the path and final destination of a drug. The isotope F is cited as a possible radiotracer and has a half—life of 110 minutes. From a sample of I mole of 1SF, about how many atoms are left after a day?

Interpretation Introduction

Interpretation:

Interpret the remaining amount of atom of F after 1 day if the half-life is 110 min for 1 mol of F is present initially.

Concept Introduction:

Half-life is the measurement of time required for the conversion of half of the reactant to product and can be indicated as t1 / 2.

A reactant reacts to produce product duration of time whereas if time to be recorded for the completion of half of the reaction then it gets denoted by t1 / 2.

Explanation

For determining the amount of sample remain after 6 minutes.

N /N0(1 /2)T /Th

Where, N is concentration of sample left.

N0 is original concentration of sample = 1 mol

T h is half life = 110 min

T is time = 24×60 = 1440 min

N /1 = (1/2)1440 /110N = 1

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