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A layer of peat buried beneath the glacial sediments from

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 80P Chapter 17

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 80P

A layer of peat buried beneath the glacial sediments from the last ice age had a carbon-14 content of 25% of that found in living organisms. How long ago was this ice age?

Step-by-Step Solution:
Step 1 of 2

Solution 80P:

Here, we are going to calculate the old of the ice age.

Step1:

 Half life period of the carbon-14 is 5730 years

We know,

t1/2 =

k =

   =

= 1.209x 10-4 yr-1

Step 2:

We know,

-kt = ln= ln = -1.3863

 =  = 1.146645  x 104 yr

                

= 11466.45 yr

Thus, the ice age is 11466.45 years old.

Note,  if we take, -1.386 instead of -1.3863

Step 2 of 2

Chapter 17, Problem 80P is Solved
Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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