Connect Access Card for The Physical Universe
16th Edition
ISBN: 9781259663888
Author: Konrad B Krauskopf; Arthur Beiser
Publisher: McGraw-Hill Education
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Chapter 8, Problem 6E
To determine
The incorrect statements and indicate why this statement is wrong and modify it according to modern views.
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One of the nuclear fission reaction that can happen in a nuclear reactor is the fission of Uranium-235 into Rubidium- 96 and Cesium-137 as shown below. The atomic mass of U-235 is 235.043930 u, the atomic mass of Rubidium is 95.93427 u, the atomic mass of Cesium-137 is 136.90709 u, and the mass of a neutron is 1.008665 u.
Determine the amount of energy released by the reaction, expressed in MeV. Keep five significant digits.
An archeologist discovers the bones of a person who appeared to have been dead a very long time. Using carbon dating, they determine that the rate of change of 146C the is 0.259 Bq per gram of carbon for the bones. The rate of change of 146C is 0.270 Bq per gram of carbon for the bones of a person who had just died. How old are the bones? The half life of 146C is 5.73 x 103 y. A. 120 years B. 259 years C. 343 years D. 568 years E. 754 years
An archeologist discovers the bones of a person believed to have been dead for 600 years. Using carbon dating, they wish to confirm the time of the person's demise. The rate of change of 146C is 0.270 Bq/g of carbon for the bones of a person who had just died. If the archeologist is correct about the person's time of death, what rate of change of 146C should they find when they carbon date the bones? The half life of 146C is5.73 x 103 y. A. 0.245 Bq/g B. 0.267 Bq/g C. 0.251 Bq/g D. 0.238 Bq/g E. 0.259 Bq/g
Chapter 8 Solutions
Connect Access Card for The Physical Universe
Ch. 8 - Prob. 1MCCh. 8 - Prob. 2MCCh. 8 - Prob. 3MCCh. 8 - Prob. 4MCCh. 8 - Prob. 5MCCh. 8 - Prob. 6MCCh. 8 - Prob. 7MCCh. 8 - Prob. 8MCCh. 8 - Prob. 9MCCh. 8 - Prob. 10MC
Ch. 8 - Prob. 11MCCh. 8 - Prob. 12MCCh. 8 - Prob. 13MCCh. 8 - Prob. 14MCCh. 8 - Prob. 15MCCh. 8 - Prob. 16MCCh. 8 - Prob. 17MCCh. 8 - Prob. 18MCCh. 8 - Prob. 19MCCh. 8 - Prob. 20MCCh. 8 - Prob. 21MCCh. 8 - Prob. 22MCCh. 8 - Prob. 23MCCh. 8 - Prob. 24MCCh. 8 - Prob. 25MCCh. 8 - Prob. 26MCCh. 8 - Prob. 27MCCh. 8 - Prob. 28MCCh. 8 - Prob. 29MCCh. 8 - Prob. 30MCCh. 8 - Prob. 31MCCh. 8 - Prob. 32MCCh. 8 - Prob. 33MCCh. 8 - Prob. 34MCCh. 8 - Prob. 35MCCh. 8 - Prob. 36MCCh. 8 - Prob. 37MCCh. 8 - Prob. 38MCCh. 8 - Prob. 39MCCh. 8 - Prob. 40MCCh. 8 - Prob. 1ECh. 8 - Prob. 2ECh. 8 - Prob. 3ECh. 8 - Prob. 4ECh. 8 - Prob. 5ECh. 8 - Prob. 6ECh. 8 - Prob. 7ECh. 8 - Prob. 8ECh. 8 - Prob. 9ECh. 8 - Prob. 10ECh. 8 - Prob. 11ECh. 8 - Prob. 12ECh. 8 - Prob. 13ECh. 8 - Prob. 14ECh. 8 - The polonium isotope 84210Po undergoes alpha decay...Ch. 8 - Prob. 16ECh. 8 - Prob. 17ECh. 8 - Prob. 18ECh. 8 - Prob. 19ECh. 8 - Prob. 20ECh. 8 - Prob. 21ECh. 8 - If the half-life of a radionuclide is 1 month, is...Ch. 8 - Prob. 23ECh. 8 - One-eighth of a sample of T90227h remains...Ch. 8 - Prob. 25ECh. 8 - Prob. 26ECh. 8 - Prob. 27ECh. 8 - Prob. 28ECh. 8 - Prob. 29ECh. 8 - Prob. 30ECh. 8 - Prob. 31ECh. 8 - Prob. 32ECh. 8 - Prob. 33ECh. 8 - Prob. 34ECh. 8 - Prob. 35ECh. 8 - Prob. 36ECh. 8 - Prob. 37ECh. 8 - Prob. 38ECh. 8 - Prob. 39ECh. 8 - Prob. 40ECh. 8 - Prob. 41ECh. 8 - Prob. 42ECh. 8 - Prob. 43ECh. 8 - Prob. 44ECh. 8 - Prob. 45ECh. 8 - Prob. 46ECh. 8 - Prob. 47ECh. 8 - Prob. 48ECh. 8 - Prob. 49ECh. 8 - Prob. 50ECh. 8 - Prob. 51ECh. 8 - Prob. 52ECh. 8 - Prob. 53ECh. 8 - Prob. 54ECh. 8 - Prob. 55ECh. 8 - Prob. 56ECh. 8 - Prob. 57ECh. 8 - Prob. 58E
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- Arrange the following according to their ability to act as radiation shields, with the best first and worst last. Explain your ordering in terms of how radiation loses its energy in matter. (a) A solid material with low density composed of low-mass atoms. (b) A gas composed of highmass alums. (c) A gas composed of lowmass atoms. (d) A solid with high density composed of highmass atoms.arrow_forwardThe Galileo space probe was launched on its long journey past Venus and Earth in 1989, with an ultimate goal of Jupiter. Its power source is 11.0 kg of 238Pu, a by-product of nuclear weapons plutonium production. Electrical energy is generated thermoelectrically from the heat produced when the 5.59-MeV a panicles emitted in each decay crash to a halt inside the plutonium and its shielding. The half-life of 238Pu is 87.7 years. What was the original activity of the 238Pu in becquerels? What power was emitted in kilowatts? What power was emitted 12.0 y after launch? You may neglect any extra energy from daughter nuclides and any losses from escaping rays.arrow_forwardThe binding energy of a hydrogen atom is 13.6 eV.(a) What is the decrease in mass that occurs when a hydrogen atom is formed from a proton and a neutron? Express the result in atomic mass units (u) and in mass percent of hydrogen.(b) What is the decrease in mass that occurs when a helium nucleus is formed from two protons and two neutrons? Express the result in atomic mass units (u) and in percent of the mass of the helium nucleus.(c) Compare your answers to items (a) and (b). Why do we hear that mass "loss" occurs in nuclear reactions but not in chemical reactions (Lavoisier's Law)?arrow_forward
- An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 146 g (HINT: Assume all the carbon is 12C and determine the number of atoms, 12C has a molar mass of 12 g/mol) and careful measurements show that the remaining 14C has a current decay rate of 26 decays/s. Determine the age of the bone (and presumably the jewelry). The ratio of 14C to 12C when the animal died was 1.25×10-12 & the half-life of 14C is 5730 y. Additionally, 1 mol = 6.022×1023 particles, 1 y = 365.25 days, & 1 day = 24 h.age of bone =arrow_forwardFor the following reaction, what is the energy released, in GJ/mol? (1 GJ = 1E9 J) Use 2.998E8 m/s as the speed of light 1 a m u has a mass of 1.6605E-27 kg A + B → C + D A B C D mass (amu) 3.1706 6.3211 4.1531 5.1703arrow_forwardThe uranium in the earth’s crust is 0.7% 235U and 99.3% 238U. Two billion years ago, 235U comprised approximately 3% of the uranium in the earth’s crust. This tells you something about the relative half-lives of the two isotopes. Suppose you have a sample of 235U and a sample of 238U, each with exactly the same number of atoms.A. The sample of 235U has a higher activity.B. The sample of 238U has a higher activity.C. The two samples have the same activity.arrow_forward
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