5. Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a half-life of approximately 5730 years. Using this known piece of -At information, scientists can date objects such as the Dead Sea Scrolls. The function N = Noe" represents the exponential decay of a radioactive substance. N is the amount remaining after time t in years, No is the initial amount of the substance and A is the decay constant. Find the rate of change of an initial amount of 1 mg of carbon-14 found in the scrolls, if the decay constant is given as A = 1.21 x 10*. what is the current decay rate of a sample If the percentage of carbon-14 atoms remaining is 65%?
5. Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a half-life of approximately 5730 years. Using this known piece of -At information, scientists can date objects such as the Dead Sea Scrolls. The function N = Noe" represents the exponential decay of a radioactive substance. N is the amount remaining after time t in years, No is the initial amount of the substance and A is the decay constant. Find the rate of change of an initial amount of 1 mg of carbon-14 found in the scrolls, if the decay constant is given as A = 1.21 x 10*. what is the current decay rate of a sample If the percentage of carbon-14 atoms remaining is 65%?
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter14: Nuclear Chemistry
Section: Chapter Questions
Problem 14.94PAE
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Transcribed Image Text:5.
Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants
and animals on the surface of the earth. It has a half-life of approximately 5730 years. Using this known piece of
information, scientists can date objects such as the Dead Sea Scrolls. The function N = Noe represents the
exponential decay of a radioactive substance. N is the amount remaining after time t in years, No is the initial
amount of the substance and A is the decay constant. Find the rate of change of an initial amount of 1 mg of
carbon-14 found in the scrolls, if the decay constant is given as A = 1.21 x 10o“. What is the current decay rate of a
sample If the percentage of carbon-14 atoms remaining is 65%?
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