Q1 CHEM 1032, General ChemistryRecitation Packets Series, 20201. Technetium-99 is produced by a sequence of reactions in which molybdenum-98 is bombardedwith neutrons to form molybdenum-99, which undergoes B decay to technetium-99m.Write the balanced nuclear equations for this sequence.a.b. Compare the neutron-to-proton ratio of the final daughter product with that ofmolybdenum-99. Which is closer to the valley of stability?2. Actinium-225 decays by successive emission of three a particles.Write the nuclear equations for the three decay processes.b. Compare the neutron-to-proton ratio of the final daughter product with that of actinium-225. Which is closer to the valley of stability?a,Activity 3. Kinetics of radioactive decays.3. Approximately how old is a fossil with 12 g of 14C if it initially possessed 32 g of 1"C?4. Approximately what percentage of an initial sample of "C remains after 33,450 years?5. A laboratory investigation shows that a sample of uranium ore contains 5.37 mg of 235U and 2.52mg of 20 Pb. Calculate the age of the ore. The half-life of 235U is 4.5 x 10°yr.6. Uranium-238 decays through a series of a and B emissions to lead-206, with an overall half-life forthe entire process of 4.5 Ga. Calculate the age of a uranium-bearing ore that is found to have a238U/206P6 ratio ofa.1.00b. 1.257. (a) Use a standard graphing program to plot the fraction of C remaining in an archaeologicalsample 40.0 ky (kiloyears) old as a function of time. For convenience, use intervals of 1000 y.(b) Plot the natural logarithm of the fraction of l C remaining against time.(c) After what period of time will less than 1.00% of the original 1C in the sample remain?

Radioactive decay is the decay of unstable nuclei into a number of nuclei of other elements. During…

es, 2020 1. Technetium-99 is produced by a sequence of reactions in which molybdenum-98 is bombarded with neutrons to form molybdenum-99, which undergoes B decay to technetium-99m. a. Write the balanced nuclear equations for this sequence. b. Compare the neutron-to-proton ratio of the final daughter product with that of molybdenum-99. Which is closer to the valley of stability?

es, 2020 1. Technetium-99 is produced by a sequence of reactions in which molybdenum-98 is bombarded with neutrons to form molybdenum-99, which undergoes B decay to technetium-99m. a. Write the balanced nuclear equations for this sequence. b. Compare the neutron-to-proton ratio of the final daughter product with that of molybdenum-99. Which is closer to the valley of stability?

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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