8:16 Sat, Dec 3 in M.O NUCLEAR CHEMISTRYUnderstanding radioactive half lifesampleA medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 11.00 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 1/4 of the initialamount.ABCDExplanationsymbol612920181994275342CuTlradionuclideMoSeCheckhalf-life3. hours73.0 hours66.0 hours120. daysinitial radioactivity(choose one)(choose one)(choose one) ✓(choose one)time for amount of radionuclide todecrease to 1/4 of initial amountX3hourshourshoursdays3/5S100%Chisom VGEⒸ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Acc156|||O

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amount. sample A B C D symbol 61 29 201 81 99 42 75 34 Cu T1 radionuclide Mo Se half-life 3. hours 73.0 hours 66.0 hours 120. days initial radioactivity (choose one) (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/4 of initial amount X hours hours hours days Ś

amount. sample A B C D symbol 61 29 201 81 99 42 75 34 Cu T1 radionuclide Mo Se half-life 3. hours 73.0 hours 66.0 hours 120. days initial radioactivity (choose one) (choose one) (choose one) (choose one) time for amount of radionuclide to decrease to 1/4 of initial amount X hours hours hours days Ś

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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40) If the half life- of a 100 mg radioactive isotope is 24 hrs. How many milligrams remain after second half life.
A medic hnican 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 radionudlide in each sample to decrease to 1/8 of the initial amount. radionuclide time for amount of initial radioactivity radionuclide to decrease to 1/8 of initial amount sample symbol half-life 139 Ce 58 138. days (choose one) V days A 125 60.0 days (choose one) v O days B 53 77 Br 35 57.0 hours |(choose one) v hours 51 Mn O minutes D 46.0 minutes [choose one) v 25
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 24.00 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 1/3 of the initial amount. radionuclide time for amount of radionuclide to decrease to 1/32 of initial amount sample Initial symbol half-ife radioactivity 177 Lu 71 7.0 days tehnose one 0 O days 212 Bi O nours 1. hour (choose one) e 83 85 O days Sr 65.0 days (choosa one) B 38 88 107. days O days D. Y (choose one) B 39 time for amount of radionuclide to decrease to radionuclide Initial sample radioactivity symbol half-life 1/32 of initial amount 177 Lu 7.0 days O days A v (choose one) 71 1 (highest) 212 Bi 83 1. hour O hours 3. 4 (lowest) 85 Sr 38 I days 65.0 days (choose one) O 88 107. days O days D Y. (choose one) B 39
Please help me how to solve this equation. Thank you very much
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)
The half-life of 232Th is 1.4 x 10" yr. Find the number of disintegrations per hour emitted by 1.0 mol of 23TH.
0.1 mole of liquid ethanol C;H;OH was burned in a bomb calorimeter with a heat capacity of 27.34 kJ.K. The temperature of the calorimeter was increased from 21.4°C to 26.4°C. a) Calculate the standard enthalpy change of combustion in kJ/mol. b) Calculate the standard enthalpy of formation for liquid C;H;OH in kJ/mol. c) For ethanol, AvapH° = 43.5 kJ/mol. Calculate q, w, AH and AU when 1.75 mole C;H;OH (I) is vaporized at 260 K and 765 Torr. AH° / kJ.mol H20(g) H20(1) CO2(g) -241.82 -285.83 -393.51 Suppose you have 1 mole of a monatomic ideal propane (C3H3) at 1 bar and 300 K. Calculate q, w, AH and AU for each of the processes described in part a, b, and c. a) The system undergoes a reversible isothermal expansion until its volume is tripled. b) The system undergoes an irreversible expansion until its volume is tripled and against an external pressure of 0.1 bar. c) The system undergoes a reversible process in which 1 kJ of heat is absorbed by the gas and the enthalpy change is -1.50…
* → 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 ()))
Carbon-14 (14C) is a naturally occurring radionuclide of carbon with about 5,730 years half-life. If 12C has 6 protons, 6 neutrons, and 6 electrons. How many neutrons does 14C has?
A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 25.00 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. radionuclide time for amount of radionuclide to decrease to 1/4 of initial amount initial radioactivity olo sample symbol half-life 64 Ga 31 3. minutes v (choose one) 1 (highest) Iminutes A 203 3 2. days I days Pb 4 (lowest) 82 122 4. minutes (choose one) minutes 53 32 14. days I days D (choose one) 15 Explanation Check Privacy Accessibility 2021 McGraw-Hill Education. All Rights Reserved. Terms of Use TO W MAY 1 10 MacBook Air
oudos A medical technician is working with the four samples of radionuclides listed in the table below. Initially, each sample contains 11.00 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 1/16 of the initial amount.