The radioactive isotope selenium-75 is used in medical imaging as indicated on the table above. If 49.1milligrams of selenium-75 is administered to a patient, how many milligrams are left in the body after 590.0days?mg

Given:(based on what I see since the image is not clear, feel free to change it accordingly to the…

Answered: The radioactive isotope selenium-75 is…

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter7: Chemical Energy

Section: Chapter Questions

Problem 28E: Consider the accompanying diagram. Ball A is allowed to fall and strike ball B. Assume that all of...

See similar textbooks

Similar questions

What were the two main pursuits of alchemy? What were the contributions of alchemy to modern chemistry?
Consider the accompanying diagram. Ball A is allowed to fall and strike ball B. Assume that all of ball As energy is transferred to ball B at point I, and that there is no loss of energy to other sources. What is the kinetic energy and the potential energy of ball B at point II? The potential energy is given by PE = mgz, where m is the mass in kilograms, g is the gravitational constant (9.81 m/s2), and z is the distance in meters.
The radioactive isotope thallium-201 is used in medical imaging as indicated on the table above. If 55.1 milligrams of thallium-201 is administered to a patient, how many milligrams are left in the body after 12.2 days? mg
Palladium-103 is a radioactive isotope used in prostate brachytherapy and has a half-life of 14.3 days. If 1.5 grams of palladium-103 is administered to the patient how much will remain after 28.6 days? Be sure to use correct significant figures and units in your answer.
An archeologist was investigating a dig site and found charcoal in a pre-historic fire pit. Charcoal consists mostly of the element carbon. There are three naturally occurring isotopes of carbon: 12C, 13C, and 14C. Carbon-14 is radioactive and can be used to date the charcoal. The archeologist collected a sample for testing and learned that the carbon-14 activity was found to be 10 counts per minute. A sample of new charcoal of similar size showed a carbon-14 activity of 640 counts per minute. How many carbon-14 half-lives have occurred? Estimate the age of the charcoal. (The half-life of 14C is 5,730 years.)
Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 8.10 mg sample would be left after 58.8 days? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol. 0 x10 X μ Ś ? 000
A brain scan uses the radioisotope oxygen-15. The recommended dosage is 50 mCi . A supply of 230 mCi in 40mL arrives at the lab.How many mL will be injected into a patient?
Studying the decay of radioactive isotopes in dead organisms helps scientists to identify fossilized remains. The ratio of C-12 to C-14 in the atmosphere is 1 x 1012. The table BELOW shows this ratio inside the body of three organisms. C12/C14 Ratio Organism C12/C14 Ratio A 1 x 1012 B 2 x 1012 C 4 x 1012 What can most likely be concluded from the info above? Only Organism A is dead, and Organism C is older than Organism B. Only Organism A is dead, and Organism B is older than Organism C. Both Organism B and Organism C are dead, but Organism C has been dead longer than Organism B. Both Organism B and Organism C are dead, but Organism B has been dead longer than Organism C.
Thallium-201 is a radioisotope used in brain scans. If the recommended dose is 3.0 mCimCi and a vial contains 70. mCimCi in 50. mLmL , how many milliliters should be injected?
A brain scan uses the radioisotope oxygen-15. The recommended dosage is 50 mCi. A supply of 250 mCi in 20 mL arrives at the lab. How many milliliters will be injected into a patient?
How did you get this? k===0.693t1/20.69315 hrs0.0462 hrs−1k=0.693t1/2=0.69315 hrs=0.0462 hrs 0.693 a 102.0 nanogram(ng) sample of sodium-24 was stored in a lead-lined cabinet for 2.5 days How much sodium-24 remained? The half-life os sodium -24 is 15 hours _________ ng sodium -24 remain check_circle Expert Answer thumb_up thumb_down Step 1 Radioactive decay is a first order reaction. Conversion of days into hours: 1 day2.5 days===24 hrs2.5×2460 hrs1 day=24 hrs2.5 days=2.5×24=60 hrs Calculation of k: k===0.693t1/20.69315 hrs0.0462 hrs−1k=0.693t1/2=0.69315 hrs=0.0462 hrs-1 Step 2 Radioactive decay is a first order reaction, therefore: [A]=[Ao] e−kt[A]=[Ao] e-kt where [A] is the final amount remained at time t, [Ao] is the initial amount. Putting values: [A]====102.0 ng×e−0.0462 hrs−1×60 hrs102.0 ng×e−2.772102.0 ng×0.062546.38 ng[A]=102.0 ng×e-0.0462 hrs-1×60 hrs=102.0 ng×e-2.772=102.0 ng×0.06254=6.38 ng Thus 6.38 ng of sodium-24 remained.
11. At death, a nobleman in ancient Egypt was mummified and his body contained 1.4 x 103 g of potassium-40 (t1/2 = 1.25 x 10° yr), 1.2 x 108 g of carbon-14 (t1/2 = 5730 yr) and 4.8 x g of tritium (hydrogen-3) (t1/2 = 12.26 yr). Calculate the mummy's age with all three elements and then identify which element gave the most accurate estimate of the mummy's age. 10-14 100% Give Feedback to Micro TSC CROCKETT IVY

SEE MORE QUESTIONS

Recommended textbooks for you

Chemistry: An Atoms First Approach

Chemistry

ISBN:

9781305079243

Author:

Steven S. Zumdahl, Susan A. Zumdahl

Publisher:

Cengage Learning

Chemistry: Matter and Change

Chemistry

ISBN:

9780078746376

Author:

Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:

Glencoe/McGraw-Hill School Pub Co

Chemistry In Focus

Chemistry

ISBN:

9781337399692

Author:

Tro, Nivaldo J.

Publisher:

Cengage Learning,

Chemistry: An Atoms First Approach

Chemistry

ISBN:

9781305079243

Author:

Steven S. Zumdahl, Susan A. Zumdahl

Publisher:

Cengage Learning

Chemistry: Matter and Change

Chemistry

ISBN:

9780078746376

Author:

Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom

Publisher:

Glencoe/McGraw-Hill School Pub Co

Chemistry In Focus

Chemistry

ISBN:

9781337399692

Author:

Tro, Nivaldo J.

Publisher:

Cengage Learning,

Introductory Chemistry: A Foundation

Chemistry

ISBN:

9781337399425

Author:

Steven S. Zumdahl, Donald J. DeCoste

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS

The radioactive isotope selenium-75 is used in medical imaging as indicated on the table above. If 49.1 milligrams of selenium-75 is administered to a patient, how many milligrams are left in the body after 590.0 days? mg