Hw.83. Consider the following radioactive decay:24U-230 Th 226 Ra9290where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr.90When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U?90A. 1.854 x 10 yrB. 13.24 x 10yrOC. 2.65 x 10 yrD. 54 x 10³yrOE. 5.4 x 10 yr

Use 1st order equation to find out rate constant first then use time maximum formula.

Consider the following radioactive decay: 24U-230 Th 6 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 226 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr OD. 54 x 10³yr DE. 5.4 x 10¹ yr

Consider the following radioactive decay: 24U-230 Th 6 Ra 92 90 where the half-life of 234U is 2.47 x 10³ hr and half-life of 200Th is 7.5 × 10 yr. 90 226 When will the amount of isotope 230Th attain maximum if one starts with 1.5 kg of U? 90 A. 1.854 x 10 yr B. 13.24 x 10yr OC. 2.65 x 10 yr OD. 54 x 10³yr DE. 5.4 x 10¹ yr

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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