Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Question
Chapter 20, Problem 72AP
Interpretation Introduction
Interpretation:
The statement, “Thescientist is able to tell the age of the fossil,”is to be explained.
Concept introduction:
Radiometric dating is a technique used to date objects and rocks based on the decay rate of the various radioactive isotopes.
Carbon-14 dating is a type of analysis in which the objective age of carbon-based material is determined.
To determine the age of an object, the half-life of a radioactive isotope is used as an atomic clock.
A mass spectrometer determines the type and amount of isotopes present in the rock.
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1. the age of fossils can be trace by using isotopes c12 and c14 called carbon dating for generations. true or false ?
The radar active element carbon 14 has a 1/2 life of 5750 years as scientists determined that the bones from a mastodon had lost 64.7% of their carbon 14 how old were the bones at the time they were discovered
Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 8.10 mg sample would be left after 58.8 days?
Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol.
0
x10
X
μ
Ś
?
000
Chapter 20 Solutions
Chemistry
Ch. 20.1 - Practice Problem ATTEMPT
Identify X in each of...Ch. 20.1 - Prob. 1PPBCh. 20.1 - Practice Problem CONCEPTUALIZE
For each process,...Ch. 20.1 - Prob. 1CPCh. 20.1 - Prob. 2CPCh. 20.2 - Prob. 1PPACh. 20.2 - Prob. 1PPBCh. 20.2 - Practice Problem CONCEPTUALIZE Which of the...Ch. 20.2 - Prob. 1CPCh. 20.2 - Prob. 2CP
Ch. 20.2 - Prob. 3CPCh. 20.2 - Prob. 4CPCh. 20.3 - Prob. 1PPACh. 20.3 - Prob. 1PPBCh. 20.3 - Practice Problem CONCEPTUALIZE
The Think About It...Ch. 20.3 - Prob. 1CPCh. 20.3 - Prob. 2CPCh. 20.3 - Prob. 3CPCh. 20.4 - Practice Problem ATTEMPT Determine the age of a...Ch. 20.4 - Practice Problem BUILD How much 206 Pb will be in...Ch. 20.4 - Prob. 1PPCCh. 20.4 - Prob. 1CPCh. 20.4 - Prob. 2CPCh. 20.5 - Prob. 1PPACh. 20.5 - Prob. 1PPBCh. 20.5 - Practice Problem CONCEPTUALIZE
One of the major...Ch. 20 - Prob. 1QPCh. 20 - Prob. 2QPCh. 20 - Prob. 3QPCh. 20 - Prob. 4QPCh. 20 - Prob. 5QPCh. 20 - Prob. 6QPCh. 20 - Prob. 7QPCh. 20 - Prob. 8QPCh. 20 - 20.9 why is it impossible for the isotope to...Ch. 20 - Prob. 10QPCh. 20 - Prob. 11QPCh. 20 - Prob. 12QPCh. 20 - Prob. 13QPCh. 20 - For each pair of isotopes listed, predict which...Ch. 20 - Prob. 15QPCh. 20 - Prob. 16QPCh. 20 - Prob. 17QPCh. 20 - Prob. 18QPCh. 20 - Prob. 19QPCh. 20 - Prob. 20QPCh. 20 - Prob. 21QPCh. 20 - Prob. 22QPCh. 20 - Prob. 23QPCh. 20 - Prob. 24QPCh. 20 - Prob. 25QPCh. 20 - Prob. 26QPCh. 20 - Prob. 27QPCh. 20 - Prob. 28QPCh. 20 - Prob. 29QPCh. 20 - Prob. 30QPCh. 20 - Prob. 31QPCh. 20 - Prob. 32QPCh. 20 - Prob. 33QPCh. 20 - Prob. 34QPCh. 20 - Prob. 35QPCh. 20 - Prob. 36QPCh. 20 - Prob. 37QPCh. 20 - Prob. 38QPCh. 20 - Prob. 39QPCh. 20 - Prob. 40QPCh. 20 - Prob. 41QPCh. 20 - Prob. 42QPCh. 20 - Prob. 43QPCh. 20 - Prob. 44QPCh. 20 - Prob. 45QPCh. 20 - Prob. 46QPCh. 20 - Prob. 47QPCh. 20 - Prob. 48QPCh. 20 - Prob. 49QPCh. 20 - Prob. 50QPCh. 20 - Prob. 51QPCh. 20 - Prob. 52QPCh. 20 - Prob. 53QPCh. 20 - Prob. 54QPCh. 20 - Prob. 55QPCh. 20 - Prob. 56QPCh. 20 - Prob. 57QPCh. 20 - Prob. 58QPCh. 20 - Prob. 59QPCh. 20 - Prob. 60QPCh. 20 - Prob. 61QPCh. 20 - Prob. 62APCh. 20 - Prob. 63APCh. 20 - Prob. 64APCh. 20 - Prob. 65APCh. 20 - Prob. 66APCh. 20 - Prob. 67APCh. 20 - Prob. 68APCh. 20 - Prob. 69APCh. 20 - Prob. 70APCh. 20 - Prob. 71APCh. 20 - Prob. 72APCh. 20 - Prob. 73APCh. 20 - Prob. 74APCh. 20 - Prob. 75APCh. 20 - Prob. 76APCh. 20 - Prob. 77APCh. 20 - Prob. 78APCh. 20 - Prob. 79APCh. 20 - Prob. 80APCh. 20 - Prob. 81APCh. 20 - Prob. 82APCh. 20 - Prob. 83APCh. 20 - Prob. 84APCh. 20 - Prob. 85APCh. 20 - Prob. 86APCh. 20 - Prob. 87APCh. 20 - Prob. 88APCh. 20 - Prob. 89APCh. 20 - Prob. 90APCh. 20 - Prob. 91APCh. 20 - Prob. 92APCh. 20 - Prob. 93APCh. 20 - Prob. 94APCh. 20 - Prob. 95APCh. 20 - Prob. 96APCh. 20 - Prob. 97APCh. 20 - Prob. 98APCh. 20 - Prob. 99APCh. 20 - Prob. 100APCh. 20 - Prob. 101APCh. 20 - Prob. 102APCh. 20 - Prob. 103APCh. 20 - Prob. 1SEPPCh. 20 - Prob. 2SEPPCh. 20 - Prob. 3SEPPCh. 20 - Prob. 4SEPP
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Similar questions
- An archeologist was investigating a dig site and found charcoal in a pre-historic fire pit. Charcoal consists mostly of the element carbon. There are three naturally occurring isotopes of carbon: 12C, 13C, and 14C. Carbon-14 is radioactive and can be used to date the charcoal. The archeologist collected a sample for testing and learned that the carbon-14 activity was found to be 10 counts per minute. A sample of new charcoal of similar size showed a carbon-14 activity of 640 counts per minute. How many carbon-14 half-lives have occurred? Estimate the age of the charcoal. (The half-life of 14C is 5,730 years.)arrow_forward4) How many years old is a person who has lived for 1 billion seconds?arrow_forwardIndium-116 is radioactive and has a half life of 14.10 seconds. How much of a 7.20 mg sample would be left after 52.6 seconds? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol. □ x10 X μarrow_forward
- Iodine-125 is radioactive and has a half life of 60.25 days. How much of a 7.20 mg sample would be left after 39.1 days? Round your answer to 2 significant digits. Also, be sure your answer has a unit symbol. x10 ?arrow_forwardwrite the beat decay equation of potassium -40arrow_forwardbromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to decay from 5.60 mg to 900 μg. round your answer to 2 significant digits.arrow_forward
- Nuclear Equationsarrow_forward203.) The naturally occurring isotope rubidium-87 decays by beta emission to strontium-87. This decay is the basis of a method for determining the ages of rocks. A sample of rock contains 122.0 μg^87 Rb and 6.1 μg^87 Sr . What is the age of the rock? The half-life of rubidium-87 is 4.8x10^10 y. There was no strontium-87 in the rock initially. Age = yarrow_forward11. At death, a nobleman in ancient Egypt was mummified and his body contained 1.4 x 103 g of potassium-40 (t1/2 = 1.25 x 10° yr), 1.2 x 108 g of carbon-14 (t1/2 = 5730 yr) and 4.8 x g of tritium (hydrogen-3) (t1/2 = 12.26 yr). Calculate the mummy's age with all three elements and then identify which element gave the most accurate estimate of the mummy's age. 10-14 100% Give Feedback to Micro TSC CROCKETT IVYarrow_forward
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