Check Your Understanding We can also use the activity of a particular sample to solve a ra- diocarbon dating problem. The activity of '“C in the atmosphere (and therefore in all living things) today is 0.255 Bq/g of total carbon. Suppose that archaeologists found carbonized wheat grains in a fire pit at a dig site in the plains of northeastern Colorado. Measurement of the decay rate showed 0.070 Bq/g of carbon. How long ago was the wheat harvested?

Check Your Understanding We can also use the activity of a particular sample to solve a ra- diocarbon dating problem. The activity of '“C in the atmosphere (and therefore in all living things) today is 0.255 Bq/g of total carbon. Suppose that archaeologists found carbonized wheat grains in a fire pit at a dig site in the plains of northeastern Colorado. Measurement of the decay rate showed 0.070 Bq/g of carbon. How long ago was the wheat harvested?

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Similar questions

In radioactive dating using carbon-14 and carbon-12, why is it essential that carbon-12 be a stable isotope?
Please answer.
Find the activity of a sample containing 5.69 10-6 g of 60-27 Co (T1/2 = 5.27 years).
A sample of cesium-137 has an activity of 8.00 mCi. How many micrograms of Cs-137 are present in the sample? T1/2=30.08 years
Which radioactive decay is most probable? O 14c → 4N + B O 1%c → ZBe + x O 14c → 1ºc + B• O 14c → '}B + B+
You are an archaeologist, and send some leather clothing found at a burial site to be radiocarbon dated. Based on other clues, you think that the leather should be 2500 years old. What activity ought to come back from the lab, in Bq per gram of carbon? (These sorts of checks are important in science.) The base carbon-14 activity is 0.231 Bq per gram of carbon, and the decay constant of carbon-14 is 1.21x104 1/year.
Calculate the atomic mass of the potassium-41 nucleus in amu (to three decimal places) assuming that the mass of a nucleon is 1.008 amu and the binding energy per nucleon is 1.326×10⁻¹² J/nucleon. (1 kg = 6.022×10²⁶ amu)