MISSED THIS? Watch WE Radioactive Decay Kinetics, Read Section 21.6. You can click on the Review link to access the section in your Te A patent is given 0.045 mg of technetum-90m, a radioactive isotope with a half-ife of about 60 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 AZ Previous Anwers Request Answer ? hr

MISSED THIS? Watch WE Radioactive Decay Kinetics, Read Section 21.6. You can click on the Review link to access the section in your Te A patent is given 0.045 mg of technetum-90m, a radioactive isotope with a half-ife of about 60 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 AZ Previous Anwers Request Answer ? hr

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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A) An isotope of uranium-238 decays by alpha emission. The half life of this isotope is 30 years. The sample was left to decay over a period of 240 years in ambient condition. After 240 years, the alpha decay of uranium-238 isotope resulted in the production of alpha particles and the element. with a proton number of and a mass number of B) An isotope of uranium-238 has a half-life of 30 years. If 1.00 x 106 kg of uranium-238 disintegrates over a period of 240 years, how many micrograms of uranium-238 would remain?
3. Write a balanced nuclear equation for each reaction. a. B- decay of "Rb b. B* decay of 20M9 C. a decay of 260Mt
35S → Mod 8-converted.pdf 1. Write an equation showing the emission of an alpha particle by an isotope of neptunium, 23NP, to produce an isotope of protactinium. (REFER TO EXAMPLE 1) 2. Write an equation showing the emission of a beta particle by sulfur-35, 35S, to produce an isotope of chlorine. (REFER TO EXAMPLE 1) 3. Complete these nuclear equations by filling in the missing symbol, mass number and atomic number of the product series. (REFER TO EXAMPLE 2) 16 (a) ¿C → 1B + ? (b) ES → ci+ ? 35 17 (c) P → +9e + ? 30 15 (d) Na → -je + ? 22 11 ト Iト咕5 目目 17 / 17 耳 e FOP
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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
10. How does C-14 end up in plants and animals? 29/A 09045 +8 [3] + 158 S + 11. When a plant or animals dies, what happens to the C-14? Explain using words and write the nuclear equation. 70% + [3] 12. How is the amount of C-14 found in a fossil used to determine the age of the fossil? af - + 98,
The alchemist's dream is to produce gold from cheaper and more abundant elements. This dream was finally realized when 18 Hg was converted into gold.-198 by 80 neutron bombardment. 1. Complete the unbalanced nuclear equation below. → ⁹8 Au+? 198 80 2. Gold-198 is radioactive and has a half-life of 2.7 days. Calculate the decay constant.
a. Write the nuclear equation for the alpha decay of ^221-81Rn. b. Write the nuclear equation for the radioactive decay of ^21-15P by positron emission. c. Imagine that you started with a 0.1 g sample of iodine-131, and now you have only 0.025 g remaining. If the half-life of iodine-131 is 8 days, how old is the sample? Write 2 - 3 sentences explaining your reasoning. d. Draw a diagram that illustrates how nuclei change during nuclear fusion. Write 2 - 3 sentences describing the process of nuclear fusion, including where it occurs and how the energy released can be harnessed for use in homes.
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