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General, Organic, and Biological Chemistry: Structures of Life | 4th Edition | ISBN: 9780321750891 | Authors: Karen C. Timberlake
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Fe-59 has a half-life of 44 days. If a laboratory received

Chapter 4, Problem 7SC

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QUESTION:

Fe-59 has a half-life of 44 days. If a laboratory received 8.0 µg of Fe-59, how many micrograms of Fe-59 are still active after 176 days?

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QUESTION:

Fe-59 has a half-life of 44 days. If a laboratory received 8.0 µg of Fe-59, how many micrograms of Fe-59 are still active after 176 days?

ANSWER:

Solution 7SCStep 1 of 2:The goal of the problem is to find the mass of Fe-59 (in micrograms) are still active after 176 days. Given:Half life of Fe-59 = 44 days. Mass of Fe-59 = 8.0 µgMass of Fe-59 (in micrograms) are still active after 176 days = The formula to calculate is shown below:Remaining amount = Where, n = First, let’s calculate n: Here, elapsed time = 176 days Half life = 44 daysTherefore, n = = 4.________________

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