X INCORRECT; see section 18.1A piece of a wooden tool found at a Northwest Indian fishing village site has been determined to be approximately 10,000 years old.The 14C in the wood has undergone how many half lives of decay? 14C has a half-life of 5668 years.1.764 half livesO 0.6831 half lives4.392 half lives0.5668 half lives

Answered: Image /qna-images/answer/08ffb6b2-e5d0-479d-8d6b-91c929bceede.jpg

Answered: X INCORRECT; see section 18.1 A piece…

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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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.
The table below shows the radioactive decay of a 600 g sample of Iodine-125. % of Parent Isotope Remaining Time Half- Fraction of Parent (days) Lives Isotope Remaining Mass (g) of Parent Mass (g) of Daughter Isotope Isotope 100% 1/1 600 60 1 50% 1/2 120 300 300 25% 1/4 150 450 180 3 12.5% 1/8 75 525 240 4 6.25% 1/16 37.5 562.5 300 3.125% 1/32 18.75 581.25 360 1.56% 1/64 9.4 590.6 15. What percent of iodine is left if 5 half-lives have passed? 16. What percent of iodine-125 has decayed if there are 37.5 grams of the original sample left? 17. What is the half-life of Iodine-125? 18. What mass of the Iodine-125 has decayed after 6 half-lives? 19. What fraction of the Iodine-125 remains after 300 days have passed? 20. How many half-lives would have to pass for there to be only 1.2 grams remaining? 21.How many grams of the daughter isotope are there after three half-lives?
Na-24 is used in medicine to study the circulatory system. If one gram of Na-24 decomposes by beta emission to 1/8 gram in 45 hours, what is the half-life of Na-24?
The cloth shroud from around a mummy is found to have a 14C14C activity of 8.7 disintegrations per minute per gram of carbon as compared with living organisms that undergo 16.3 disintegrations per minute per gram of carbon. From the half-life for 14C14C decay, 5715 yryr, calculate the age of the shroud. Express your answer using two significant figures.
Pd-100 has a half-life of 3.6 days. If one had 6.02x10^23 atoms at the start, how many atoms would be present after 20.0days?
How long after an animal dies will it take for the C14 to decrease by 60 percent (to 40 percent of its original value)? less than 1 half-life 1 half-life between 1 and 2 times the half-life 3 times the half-life
Technetium-99m, an important radionuclide in medicine, has a half-life of 6.0 hours. What percentage of a sample of technetium-99m will remain undecayed after the following times?12 hours1 day 6 half- lives
A 120-mgmg sample of technetium-99 mm is used for a diagnostic test. If technetium-99 mm has a half-life of 6.0 hh, how many milligrams of the technetium-99 mm sample remains active 24 hh after the test?
* → esc → C 1 O NUCLEAR CHEMISTRY Understanding radioactive half life sample 1 6 A B Explanation A Announcemer X С A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 14.00 umol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionuclide in each sample to decrease to 1/32 of the initial amount. D Q ? N symbol 90 39 55 @ 27 133 54 203 82 Y 2 radionuclide Co https://www-awu.aleks.com/alekscgi/x/Isl.exe/10_u-IgNslkr7j8P3jH-IBMBkpcnaFu0F7UjsroJMKrbFHXPNvwILIE9DNBkbkvSm.... A Xe Pb 124 * Check S W X ALEKS-Chiso X alt # [tx half-life 64.0 hours 18. hours 5.0 days 2.0 days 3 * Q Search E D $ C 4 amathxl pearso X initial radioactivity (choose one): (choose one) v 14-jad (choose one) (choose one) ✓ R F 0 % V do 5 T G time for amount of radionuclide to decrease to 1/32 of initial amount 14- ^ Homework an X 6 B Y H hours hours…
The half-lives of different radioisotopes are given in the table. Half-life (min) Radioisotope argon-44 lead-196 time: potassium-44 indium-117 How long would it take, in minutes, for the amount of argon-44 to decrease from 64.0 mg to 8.00 mg? ADI 12 37 22 43 NOV 1 C min C 3:37 1 ()))
The half-life of carbon-14 is about 5730 years. If an ancient leather strap is about 11,500 years old, what percentage of carbon-14 in a now-living object remains in the strap? O 100% 50% O 25 % none O O O O
A medical technican is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 6.00 umol of the radionuclide. First, order the samples by decreasing initial radioactivity. Then calculate how long it will take for the amount of radionudide in each sample to decrease to 1/4 of the initial amount.

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