Answered: Mr. Albedo stumbled upon an unknown…

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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Mr. Albedo stumbled upon an unknown material in an abandoned laboratory. He believes that this material is radioactive. He brought it to his laboratory at Dragonspine for identification. Then, he obtained a sample weighing 10.5 g. After 6 hours, the weight of the sample decreased to 0.171 g.

1. From the given list below, determine the possible identity of the unknown sample.

Isotope	Half-life
Ra-224	3.66 days
Pb-212	10.6 hours
Bi-212	60.6 minutes
Tl-208	3.05 minutes

2. Mr. Albedo found out that the sample was emitting alpha particles. Write the nuclear reaction involved in this process.

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