Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Chapter 12, Problem 1RAT
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How is it possible for an element to decay “forward in the periodic table”—that is, to decay to an element of higher atomic number?
Atom A has a larger atomic mass than atom B. Does this mean that atom A also has a larger atomic number? Explain.
Part 1: Carbon dating
An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 387 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 20 decays/s. Determine the age of the bone (and presumably the jewelry). The ratio of 14C to 12C when the animal died
was 1.25x10-12 & 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 =
Part 2: Rubidium-Strontium dating
A geologist finds an old rock and wants to determine its age using rubidium-strontium dating. This is possible because 87Rb, which has a
half-life of 4.75×1010 y, undergoes - decay and becomes 87Sr. The geologist determines that the ratio of 87 Sr to 87Rb is 0.033. Assuming
there was no 87Sr in the rock when it was formed, determine the age of the rock.
age of rock =
Chapter 12 Solutions
Conceptual Physical Science (6th Edition)
Ch. 12 - Prob. 1RCQCh. 12 - Prob. 2RCQCh. 12 - Prob. 3RCQCh. 12 - Prob. 4RCQCh. 12 - Prob. 5RCQCh. 12 - Prob. 6RCQCh. 12 - Prob. 7RCQCh. 12 - Prob. 8RCQCh. 12 - Prob. 9RCQCh. 12 - Prob. 10RCQ
Ch. 12 - Prob. 11RCQCh. 12 - Prob. 12RCQCh. 12 - If a baseball were the size of Earth, about how...Ch. 12 - Prob. 14RCQCh. 12 - Prob. 15RCQCh. 12 - Prob. 16RCQCh. 12 - Prob. 17RCQCh. 12 - Prob. 18RCQCh. 12 - Prob. 19RCQCh. 12 - Prob. 20RCQCh. 12 - Prob. 21RCQCh. 12 - Prob. 22RCQCh. 12 - Prob. 23RCQCh. 12 - Prob. 24RCQCh. 12 - Prob. 25RCQCh. 12 - Prob. 26RCQCh. 12 - Prob. 27RCQCh. 12 - Prob. 31TASCh. 12 - Prob. 32TASCh. 12 - Prob. 33TASCh. 12 - Rank the following three subatomic particles in...Ch. 12 - Prob. 35TARCh. 12 - Consider three 1-gram samples of matter: A,...Ch. 12 - Prob. 37TARCh. 12 - Prob. 38TARCh. 12 - Prob. 39ECh. 12 - If all the molecules of a body remained part of...Ch. 12 - Prob. 41ECh. 12 - Prob. 42ECh. 12 - Prob. 43ECh. 12 - In what sense can you truthfully say that you are...Ch. 12 - Prob. 45ECh. 12 - Prob. 46ECh. 12 - Prob. 47ECh. 12 - Prob. 48ECh. 12 - Prob. 49ECh. 12 - Prob. 50ECh. 12 - The nucleus of an electrically neutral iron atom...Ch. 12 - Prob. 52ECh. 12 - Prob. 53ECh. 12 - Prob. 54ECh. 12 - Prob. 55ECh. 12 - Prob. 56ECh. 12 - Prob. 57ECh. 12 - Which is heavier: a water molecule, H2O, or a...Ch. 12 - When we breathe we inhale oxygen, O2, and exhale...Ch. 12 - Prob. 60ECh. 12 - Prob. 61ECh. 12 - Prob. 62ECh. 12 - Prob. 63ECh. 12 - Prob. 64ECh. 12 - Prob. 65ECh. 12 - Prob. 66ECh. 12 - Prob. 74ECh. 12 - Prob. 75ECh. 12 - Prob. 76ECh. 12 - Prob. 77ECh. 12 - Prob. 78ECh. 12 - Prob. 79ECh. 12 - Prob. 80ECh. 12 - Prob. 81ECh. 12 - Prob. 82ECh. 12 - Prob. 83ECh. 12 - Prob. 84ECh. 12 - Prob. 85ECh. 12 - Prob. 86ECh. 12 - Prob. 87DQCh. 12 - Prob. 88DQCh. 12 - In 2011, China was the leading producer of...Ch. 12 - Prob. 90DQCh. 12 - Prob. 1RATCh. 12 - Prob. 2RATCh. 12 - Prob. 3RATCh. 12 - Prob. 4RATCh. 12 - Prob. 5RATCh. 12 - Prob. 6RATCh. 12 - Prob. 7RATCh. 12 - Prob. 8RATCh. 12 - Prob. 9RATCh. 12 - Prob. 10RAT
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Name three different types of evidence for the existence of atoms.arrow_forwardA radio-active element has half-life of 15 years. What is the fraction that will decay in 30 years ? (A) 0.85 (B) 0.25 (C) 0.5 (D) 0.75arrow_forwardWhat is an isotope ? Atoms of the same element whose nuclei have the same number of neutrons but a different number O of protons. Atoms of the same element whose nuclei have the same atomic numbers but a different number of neutrons. Atoms of the same element whose nuclei have the same number of neutrons but a different number of electrons. Atoms of the same element whose nuclei have the same mass numbers but a different number of protons.arrow_forward
- Strontium - 90 has a half-life of 25 years.How long will it take 10 grams of Strontium – 90 to decay to 3 grams? Round your answer to the nearest hundredth. time A = A.•() half-life final amount initial amount This is the split factor. After a half-life, one pound becomes pound. Your answer: O not enough information is given O 0.03 years O 43.42 yearsarrow_forward@ 2 W 7 In the formula E=mc2, the letter c stands for: O the speed of an electron around the nucleus O the amount of energy contained in one hydrogen nucleus the speed of light O the energy of a neutrino emerging from the Sun O the speed of sound # 3 e с $ 4 J si do % t M Oll 6 Y & 7 O C 8arrow_forwardWhen a nucleus decays by emitting an alpha particle, what is the atomic number of the resulting nucleus? What is the resulting atomic mass?arrow_forward
- 2) Uranium-238 undergoes alpha decay. Into what element does Uranium 238 transmute? What is the atomic number of the new element? 4) Technetium-99 m is a radioactive isotope with a half-life of 6 hours. If a sample of was originally 100mg , how much would remain after 24 hours? 5) How long would it take a 1-kg radioactive substance with a half-life of 100 years to decay into1 2.5 g?arrow_forwardA sample of wood from an archaeological excavation is dated by using a mass spectrometer to measure the fraction of 14C atoms. Suppose 125 atoms of 14C are found for every 1.5×1015 atoms of 12C in the sample. What is the wood's age (in years)?arrow_forwardPart 1: Carbon dating An archaeologist finds some ancient jewelry made from bone. The jewelry has a carbon mass of 127 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 16 decays/s. Determine the age of the bone (and presumably the jewelry). The ratio of 14C to 12C when the animal died was 1.25x10-12 & the half-life of 14C is 5730 y. Additionally, 1 mol = 6.022x1023 particles, 1 y = 365.25 days, & 1 day = 24 h. age of bone =arrow_forward
- Two protons in an atomic nucleus repel each other, but they are also attracted to each other. Explain.arrow_forwardHow much energy is required to remove a proton from 157? ? (Units: MeV) The following table may be helpful (download it for easier use).arrow_forward14 6C has a half life of 5,730 years. How many 6 atoms would you need in order to measure an average of 10 decays per second? Round your answer to 2 decimal places.arrow_forward
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