The half life for the decay of carbon-14 is 5.73 × × 10³ years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 59. Bq. The activity in a similar-sized sample of fresh wood is measured to be 66. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years x10

The half life for the decay of carbon-14 is 5.73 × × 10³ years. Suppose the activity due to the radioactive decay of the carbon-14 in a tiny sample of an artifact made of wood from an archeological dig is measured to be 59. Bq. The activity in a similar-sized sample of fresh wood is measured to be 66. Bq. Calculate the age of the artifact. Round your answer to 2 significant digits. years x10

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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2. A wooden object from an archeological site is subjected to radiocarbon dating. The activity of the sample that is due to ¹4C is measured to be 11.6 disintegrations per second. The activity of a carbon sample of equal mass from fresh wood is 15.2 disintegrations per second. The half-life of 14C is 5715 yr. What is the age of the archeological sample? Select Editing
The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 × 10¹⁰ years. Suppose nuclear chemical analysis shows that there is 0.423 mmol of strontium-87 for every 1.000 mmol of rubidium-87 in a certain sample of rock. Calculate the age of the rock. Round your answer to 2 significant digits. years x10
Round your answer to 2 significant digits please!
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Understanding radioactive half life A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 18.00 μmol 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 1/8 of the initial amount. radionuclide sample initial radioactivity symbol half-life time for amount of radionuclide to decrease to 1/8 of initial amount 149 A Tb 4.0 hours (choose one) hours 65 122 B I 4.0 minutes (choose one) ☐ minutes 53 192 C Ir 74.0 days (choose one) ☐ days 77 52 D Mn 6.0 days ✓ (choose one) ☐ days 25 1 (highest) 2 ☑ 3 4 (lowest)
Radioactive vanadium-48 decays with a half-life of 16.0 days. a. What is the value of k in s? k = b. A sample contains 84.0 mg *°V. How many decay events will be produced in the first second? Assume the atomic mass of **V is 48.0 u. decays/s c. A chemist obtains a fresh sample of 48 V and measures its radioactivity. She then determines that to do an experiment, the radioactivity cannot fall below 25% of the initial measured value. How long does she have to do the experiment? days
The currently accepted value for the half-life of radiocarbon is 5,730 years. Based on that information, which of the following conclusions is correct. 1. In 2,865 years, the entire original amount of carbon-14 in the sample will be gone. 2. In 11,460 years, the entire sample will be another element. 3. In 5,730 years, half of the original sample of carbon will be gone. 4. In 5,730 years, half of the original amount of carbon-14 in the sample will be gone.
* → 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…
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