An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of carbon as compared with living organisms that undergo 16.3 disintegrations per minute per gram of carbon. The half-life of C-14 carbon is 5,715 years. What is the value of the rate constant, k? b. What is the age of the shroud in years? a.

An ancient shroud is found to have a C-14 activity of 9.7 disintegrations per minute per gram of carbon as compared with living organisms that undergo 16.3 disintegrations per minute per gram of carbon. The half-life of C-14 carbon is 5,715 years. What is the value of the rate constant, k? b. What is the age of the shroud in years? a.

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...

See similar textbooks

Similar questions

A certain compound has a half-life of 8.02 days. If 20 g of this compound undergoes first-order decay: a. How long would it take to reduce the amount to 20 mg? b. How much additional time would it take to reduce the amount to 10 mg from (a)? c. How long would it take to reduce the amount by 10 g? d. How much additional time would it take to reduce the amount by 5 g from (c)?
Cobalt-60 is a radioactive isotope that is widely utilized in nuclear medicine as a -ray source. It is formed through a neutron capture reaction with cobalt-59 and is a ß emitter; ß emission is associated with intense radiation. If Co-60 has a half-life of 5.27 years: a. How long will it take for the Co-60 source to be reduced to one-eighth of its initial concentration? b. What percentage of the Co-60 source will remain after three years (rounded to two decimal places)?
3
12. In the equation X Ra +He, the symbol X Tర్రాతయీ A. Th B. Th C. Rn D. Rn An 80 milligram sample of a radioactive isotope decays to 5 milligrams in 32 days What is the half-life of this element? 13. A. 8 days B. 2 days C. 16 days D. 4 days
The half-life for P-32, a radionuclide used in DNA sequencing, is 14.28 days. Calculate the percentage of P-32 remaining after 94.2 days. Use 3 significant figures for the percentage.
How long will it take for the intial amount of U-235 to be reduced of this initial amount
Oxygen-22 disintegrates into Fluorine with a decay rate of λ = 0.315 per seconds. Considering an initial amount of Oxygen 22, which percentage of it will be left after 5.8 seconds? Keep three significant digits.
A radioactive isotope has a half-life of 14.8 hrs. Calculate its rate constant. Show work
The half-life of the radioactive isotope 137Cs is 30.17 years. How long does one have to wait until exactly 3% of the initial amount of this isotope remains? O A. 200.4 years O B. 140.1 years O C. 152.6 years O D. 29.26 years O E. 170.3 years
The half life for the isotope C11 is 20.38 minutes. How long will it take for 70% of a sample to decompose? a. 10.49 mins b. 104.9 mins c. 124 mins d. 35.40 mins
The first-order decay of iron-59 has a half-life of 44,495 days. How many grams of iron-59 decompose after one month (assume it is in April) if the sample initially weighs 100.0 g?
49. The half life of C0-60 is 5.2 years. How many mg of a 1000 mg sample will remain after 9.50 years? 0.1332 mg 0 mg 0.693 mg 0.283 mg