30. One common electrolyte in the human body is potassium ions. A small percentage of these lons are ; thus, one natural source of background radiation is the beta-decay of inside the body. A 67 kg person contains roughly 20. mg of %, which has a total activity of 5.3x10¹ Bq Calculate the exposure in pGy from this beta radiation over the course of one year (1.156x10's). Note: The energy of a single K decay is 2.13x10-¹3 Gy

30. One common electrolyte in the human body is potassium ions. A small percentage of these lons are ; thus, one natural source of background radiation is the beta-decay of inside the body. A 67 kg person contains roughly 20. mg of %, which has a total activity of 5.3x10¹ Bq Calculate the exposure in pGy from this beta radiation over the course of one year (1.156x10's). Note: The energy of a single K decay is 2.13x10-¹3 Gy

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

How many days would it take for a 1.0 milligram sample to reach this level if the half-life polonium-210 is 138 days? Given: Maximum safe body burden of polonium-210 is 7.0x10-12 grams
A wooden artifact is burned and found to contain 21 g of carbon. The 14C activity of the sample is 105 disintegrations/min. What is the age of the artifact?
A certain radioactive has a half life of 20years. i) Calculate the disintegration constant of the isotope ii) Calculate how long it will take three-quarters of the original atoms to have disintegrated. iii) In a nuclear reactor, what are the particles produced? iv) List at least (5) man made isotopes v) List at least (5) use of man made radioisotopes
original amount remains? 5. A tiny piece of paper (produced from formerly living plant matter) taken from the Dead Sea Scrolls has an activity of 10.8 disintegrations per minute per gram of Carbon. If the initial C-14 activity was 13.6 disintegrations per minute per gram of Carbon, estimate the age of the Dead Sea Scrolls. The half-life of C-14 is 5730 years.
A wooden artifact is burned and found to contain 21 g of carbon. The 14C activity of the sample is 105 disintegrations/min. What is the age of the artifact?
Krypton-87 has a rate constant of 1.5 * 10-4 s-1. What is the activity of a 2.00 mg sample?
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 22.00 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 1/4 of the initial amount. time for amount of initial radioactivity radionuclide to decrease to 1/4 of initial amount radionuclide sample symbol half-life 51 Cr 28. days (choose one) v days A 24 179 Ta 2. years (choose one) v years B 73 201 T1 73.0 hours (choose one) v hours 81 46 Sc 84.0 days (choose one) v O days D 21 (choose one) 1 (highest) 4 (lowest)
MISSED THIS? Read Section 17.5. You can click on the Review link to access the section in your eText. Part A Radium-223 decays with a halr-fe of 11.4 days How long will it take for a 0240-mol sample of radium to decay to 3.00 x 10 mol ? 91.2 days Submit Previous Anawera Request Answer * Incorrect; Try Again; 9 attempts remaining
A volcanic eruption melts a large area of rock, and all gasesare expelled. After cooling, ⁴⁰₁₈Ar accumulates from the ongoing decay of ⁴⁰₁₉K in the rock (t1₁/₂=1.25X10⁹yr). When a piece ofrock is analyzed, it is found to contain 1.38 mmol of ⁴⁰K and1.14 mmol of ⁴⁰Ar. How long ago did the rock cool?
MISSED THIS? Watch WE Radioactive Decay Kinetics, Read Section 21.6. You can click on the Review link to access the section in your eText A patent is given 0.045 mg of technetium-99m, a radioactive isotope with a half-ife of about 6.0 hr. Part A How long does it take for the radioactive isotope to decay to 3.2 x 10 mg? (Assume the nuclide is not excreted from the body) Express your answer using two significant figures. Submit AX → Previous Answers Request Answer ? hr
A bottle of wine, which was analyzed for its tritium (3H) content, was found to contain 13.35% of the 3H that was originally present when the wine was bottled. How old is the bottle of wine (in years)? (The half-life of 3H is 12.5 yr.) 4 sig figs if possible please
Calculate the percent activity of the radioactive isotope iodine-131 remaining after two half-lives. activity: %