Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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Chapter 6, Problem 5P
To determine
The minimum age of a sample in which less than
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You want to use radiometric dating to determine the age of a specimen. You use Isotope Z, which has a half-life of 645 years. You measure your sample and find that 1/16 of the original amount of Isotope Z is present. How old is the sample?
A rock sample which originally contained 400 grams of radioactive isotope X now contains 25 grams of the material. The half-life of isotope X is 10,000 years. How old is the rock sample? (Give your answer without any punctuation or lables. For example: 15000).
I need to know the number of years! There is only one part to this question. The pictures show the "Figure" and "Bar charts" tabs and the "Graph" tab says this:
A curve showing the percentage of radioactive atoms remaining in a mineral sample is graphed on a coordinate plane.
The horizontal axis, labeled "Age in half-lives," ranges from 0 to 6.
The vertical axis, labeled "Percentage remaining," ranges from 0 to 100.
The curve enters the viewing field with a negative slope at (0, 100). The magnitude of the negative slope is progressively reduced such that it is nearly horizontal as it exits the viewing field at (6, 0.02).
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Chapter 6 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 6 - Prob. 1QFRCh. 6 - Prob. 2QFRCh. 6 - How do we know that Earth has a liquid core? Why...Ch. 6 - Prob. 4QFRCh. 6 - Prob. 5QFRCh. 6 - Prob. 6QFRCh. 6 - Prob. 7QFRCh. 6 - On what plate of the crust are you located? Which...Ch. 6 - Prob. 9QFRCh. 6 - Prob. 10QFR
Ch. 6 - Prob. 11QFRCh. 6 - How does the fact that Earth has a magnetic field...Ch. 6 - Prob. 13QFRCh. 6 - Prob. 14QFRCh. 6 - Prob. 15QFRCh. 6 - Prob. 16QFRCh. 6 - Prob. 17QFRCh. 6 - Prob. 1TQCh. 6 - Submarines contain ballast tanks that can take on...Ch. 6 - According to the Guinness Book of Mountains and...Ch. 6 - Flicking your finger against your cheek makes a...Ch. 6 - How does the eventual acceptance of the plate...Ch. 6 - If Earth rotated more slowly, would you expect it...Ch. 6 - Prob. 7TQCh. 6 - Prob. 8TQCh. 6 - Prob. 9TQCh. 6 - Suppose Earths radius were only half of its real...Ch. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Prob. 5PCh. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8PCh. 6 - Prob. 1TYCh. 6 - Prob. 2TYCh. 6 - Prob. 3TYCh. 6 - Prob. 4TYCh. 6 - Prob. 5TYCh. 6 - Prob. 6TYCh. 6 - Prob. 7TYCh. 6 - Prob. 8TYCh. 6 - Prob. 9TYCh. 6 - Prob. 1EQFRCh. 6 - Prob. 2EQFRCh. 6 - Prob. 3EQFRCh. 6 - Prob. 4EQFRCh. 6 - Prob. 5EQFRCh. 6 - Prob. 6EQFRCh. 6 - Prob. 7EQFRCh. 6 - Prob. 1ETQCh. 6 - Prob. 2ETQCh. 6 - Prob. 3ETQCh. 6 - Prob. 4ETQCh. 6 - Prob. 5ETQCh. 6 - Prob. 1EPCh. 6 - Prob. 2EPCh. 6 - Prob. 3EPCh. 6 - Prob. 4EPCh. 6 - Prob. 1ETYCh. 6 - Prob. 2ETYCh. 6 - Prob. 3ETYCh. 6 - Prob. 4ETY
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- The half-life of carbon-14 is 5,730 years. Suppose a fossil is found with 30 percent as much of its carbon -14 as compared to a living sample. How old is the fossil?arrow_forwardA radioactive isotope has a half-life of 1.2 billion years. As measured by the presence of the isotope and its stable decay product, a rock originally contained 10 grams of the radioactive isotope, and now contains 1.25 grams. Approximately how many years old is the rock?arrow_forwardRadioactive isotopes can be used to find the age of rocks, fossils, or other artifacts. Carbon-14 has a half-life of 5,730 years. Suppose a sample of charcoal from a primitive fire pit contains one eighth of its original amount of carbon-14. How old is the sample? (Give your answer in units of years)arrow_forward
- An isotope of a radioactive element has half-life equal to 9 thousand years. Imagine a sample that is so old that most of its radioactive atoms have decayed, leaving just 25 percent of the initial quantity of the isotope remaining. How old is the sample? Give your answer in thousands of years, correct to one decimal place.arrow_forwardGiven that the half-life of carbon-14 is 5,730 years. Consider a sample of fossilized wood that when alive, would have contained 24 gm of carbon-14. It now contains 1.5 gm of carbon-14. How old is the sample?arrow_forwardA sample of carbon-14 has a mass of 2.0 × 10–6 g. Carbon-14 has a half-life of 6000 years. How much carbon-14 will be left after 24 000 years? How would I sovle this?arrow_forward
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