While in the upper peninsula, you have found an unusual fossil in a rock layer that you are really interested in. You are able to use radioactive dating to date the layer that the fossil is in. Your sample originally contained 1 gram of radioactive potassium 40, and only 0.25 grams of potassium 40 are left. The half life of potassium 40 is 1.25Gyr. How old is the rock in Gyr, to within 10 percen precision?
While in the upper peninsula, you have found an unusual fossil in a rock layer that you are really interested in. You are able to use radioactive dating to date the layer that the fossil is in. Your sample originally contained 1 gram of radioactive potassium 40, and only 0.25 grams of potassium 40 are left. The half life of potassium 40 is 1.25Gyr. How old is the rock in Gyr, to within 10 percen precision?
Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter24: Nuclear Chemistry
Section: Chapter Questions
Problem 1STP
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