P17E.3 Two radioactive nuclides decay by successive first-order processes: X- 25d , Y 330 d , Z (the quantities over the arrows are the half-lives in days). Suppose that Y is an isotope that is required for medical applications. At what time after X is first formed will Y be most abundant?
Q: Nuclei differ in their stability, and some are so unstable that they undergo radioactive decay. The…
A: Given: element 158Sm The ratio N/Z correlates with stability Find: N/Z ratio for…
Q: A certain radioactive nuclide decays with a disintegration constant of 0.0256 h1 (a) Calculate the…
A: Given(s): Decay constant, λ=0.0256 h-1 Require: Half-life, t12=? Fraction of sample left after,…
Q: Consider the α decay 92U143→ 90Th141+2He2. Part (a) What energy, in megaelectron volts, is…
A: The -decay is Mass of daughter nuclide is Note:Mass of uranium is Mass of helium is Find:(a) Energy…
Q: c) For a radio-nuclide, a number No of atoms at time t = 0 decays as N(t) = No ext, where \ is the…
A: The objective of the question is to derive the relationship between the half-life and the time…
Q: radioactive
A:
Q: Using appropriate formula determine the decay constant (λ) for the parent-daughter isotope pair,…
A: A parent-daughter isotope pair is The half-life time is Find:Decay constant.
Q: Page 4 2:11 4 of 8 Nuclear Done Turn over SPA5302 (2020) SECTION B Answer TWO questions from Section…
A: Step 1: Step 2: Step 3: Step 4:
Q: if you started with a parent isotope with 100% of its atoms and its half-life is 10 years. What is…
A: Given. t/T = 2 N(t) = No(1/2)t/T
Q: For questions 69-70, consider the following: Uranium (45°U) decays to lead (20 Pb) with a half-life…
A: Given data The half-life is given as t1/2 = 700 million years = 700 x 106 years The number of a lead…
Q: Which of the following statements are true (or at least aren't obviously false)? Choose all that…
A: Page 1
Q: A certain isotope has a half-life of 9.82 h. What is its decay constant in s-1?
A: Given, The half-life of an isotope, t12 = 9.82 hr
Q: Radon gas has a half-life of 3.83 days. If 3.06 g of radon gas is present at time t = 0, what mass…
A: Given value--- Half life time = 3.83 days . N0 = 3.06 g. We need to find--- what mass of radon…
Q: You are assisting in an anthropology lab over the summer by carrying out 14C dating. A graduate…
A: Let A denote the activity of the sample, t denote the time taken n decay. The time taken for n…
Q: A sample of material contains 2.00 x 1015 atoms. The sample initially consists entirely of a…
A:
Q: the sample must be due to radioactive decay. With all of this in mind, if we find that a rock…
A: This problem can be solved using radioactive decay concept.
Q: A certain isotope has a half-life of 9.06 h. What is its decay constant in s-1?
A: Given: The half life time is 9.06 h.
Q: Please Note: I need to understand why the other isotopes would not be a good fit for each of the…
A: In a meteorite or metamorphic rock to use 14C; likewise, there wouldn’t be U, Sm, Rb, or K in enough…
Q: Problem 9: 235U is the rarer of the two most common uranium isotopes. Most uranium is 238U.…
A: a)
Q: Natural Uranium, as found on earth, consists of two isotopes in the ratio of ^ 235 U/ ^ 238 U=0.07…
A:
Q: A radioactive material has a decay constant of λ = 0.0586 yr-1. If it starts out with N0 = 9.03 ×…
A: Given: Decay constant : λ=0.0586 yr-1 N0=9.03×1018 t = 407 years To find N left after given t years.
Q: In a nuclear reactor accident, the 137Cs (?1/2 = 30.2 years) nuclide is among the most problematic…
A: Given : Description of a nuclear reactor using 137Cs.
Q: c) Complete the following decay reaction to show sodium-24 undergoing B decay. First identify the…
A:
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 1 images
- An ancient artifact is found to contain 240 g of carbon and has an activity of 479 decays/min. Part A Q Search What is the approximate age of the artifact, to the nearest thousand years? (The rate of decay of carbon in living matter is R 16 decays/(g. min).) Express your answer to the nearest thousand years. 15| ΑΣΦ Submit Part B What would its initial activity have been? Ro= Request Answer 15. ΑΣΦ P Pearson W ? ? y Copyright © 2022 Pearson Education Inc. All rights reserved. | Terms of Use | Privacy Policy | Permissions | Contact Us | decays/min Revie 10:02 AM 12/12/2022A particular rock is thought to be 234 million years old. If it contains 4.84 mg of 238U, how much 206 Pb should it contain? Assume 238U decays directly to 206PB with a half-life of 4.47 × 109 y.The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 9 nucleons into free energy?
- Please asap39.8 An atom of uranium-235 (atomic mass: m(23U) cays to thorium-231 (atomic mass: 231. 00 Th) = 231.03630 u) emission of an 235.04392 u) de- 92 via the a particle (nuclear 4.00151 u). m(ža) c = 2.998 x 108 m s-1. mass: Use %D (a) What is the binding energy of an 235U nucleus (in J)? 92 (b) What is the binding energy of a 231 Th nucleus (in J)? 90 (c) What is the binding energy of an a particle (in J)? (d) What is the maximum possible ki- netic energy (in J) of the a particle emitted during this decay? (Hint: what is the difference between the mass of 23°U and the total mass of 92 231 Th and an a particle?) 90 (e) Whatis the maximum velocity of the emitted a particle?4. I have two isotopes A and A' of an element with half-lives T/2 and Ti2 respectively. (a) Show that with time, the amount of A' relative to A is NA (t) f (t) = NA (t) = f (0) exp In (2) ( (b) The half-lives of 238U and 235U are 4.5 billion years and 700 million years, respectively. Natural uranium is currently about 97.3% 238U and 0.7% 235U. Based on the formula in (a), how long ago would you have been able to build an atomic bomb out of natural uranium ore, given that "weapons grade" uranium is at least 80% 235U? [MY]
- H.W 2 A tiny piece of paper (produced from formerly living plant matter) taken from the Dead Sea Scrolls has ar activity of 10.8 disintegrations per minute per gram of carbon. If the initial C-14 activity was 13.6 disintegrations/min/g of C, estimate the age of the Dead Sea Scrolls.The unified atomic mass unit, denoted u, is defined to be 1 u = 1.6605 × 10^-27 kg. It can be used as an approximation for the average mass of a nucleon in a nucleus, taking the binding energy into account. How much energy, in megaelectron volts, would you obtain if you completely converted a nucleus of 8 nucleons into free energy?Show what is meant by the radioactive half-life of a radionuclide, using a suitable sketch graph. Mark two half-lives on your graph. Also use your graph to show the relationship of the halflife with τ, the decay constant, or characteristic decay time and τ−1, the decay rate.