Understanding Our Universe
3rd Edition
ISBN: 9780393614428
Author: PALEN, Stacy, Kay, Laura, Blumenthal, George (george Ray)
Publisher: W.w. Norton & Company,
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Chapter 6, Problem 40QAP
(a)
To determine
The reason why carbon 14 is not used to determine the age of the solar system.
(b)
To determine
The decay amount of rubidium-87
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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?
a parent isotope has a half-life of 500,000 years. if a rock contained 10mg of the parent isotope when it formed, how much parent isotope would be left after 1.5 million years?
A 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?
Chapter 6 Solutions
Understanding Our Universe
Ch. 6.1 - Prob. 6.1CYUCh. 6.2 - Prob. 6.2CYUCh. 6.3 - Prob. 6.3CYUCh. 6.4 - Prob. 6.4CYUCh. 6.5 - Prob. 6.5CYUCh. 6 - Prob. 1QAPCh. 6 - Prob. 2QAPCh. 6 - Prob. 3QAPCh. 6 - Prob. 4QAPCh. 6 - Prob. 5QAP
Ch. 6 - Prob. 6QAPCh. 6 - Prob. 7QAPCh. 6 - Prob. 8QAPCh. 6 - Prob. 9QAPCh. 6 - Prob. 10QAPCh. 6 - Prob. 11QAPCh. 6 - Prob. 12QAPCh. 6 - Prob. 13QAPCh. 6 - Prob. 14QAPCh. 6 - Prob. 15QAPCh. 6 - Prob. 16QAPCh. 6 - Prob. 17QAPCh. 6 - Prob. 18QAPCh. 6 - Prob. 19QAPCh. 6 - Prob. 20QAPCh. 6 - Prob. 21QAPCh. 6 - Prob. 22QAPCh. 6 - Prob. 23QAPCh. 6 - Prob. 24QAPCh. 6 - Prob. 25QAPCh. 6 - Prob. 26QAPCh. 6 - Prob. 27QAPCh. 6 - Prob. 28QAPCh. 6 - Prob. 29QAPCh. 6 - Prob. 30QAPCh. 6 - Prob. 31QAPCh. 6 - Prob. 32QAPCh. 6 - Prob. 33QAPCh. 6 - Prob. 34QAPCh. 6 - Prob. 35QAPCh. 6 - Prob. 36QAPCh. 6 - Prob. 37QAPCh. 6 - Prob. 38QAPCh. 6 - Prob. 39QAPCh. 6 - Prob. 40QAPCh. 6 - Prob. 41QAPCh. 6 - Prob. 42QAPCh. 6 - Prob. 43QAPCh. 6 - Prob. 44QAPCh. 6 - Prob. 45QAP
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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
- Life on Earth exists because of oxygen in Earths atmosphere. True false? Explain your answer.arrow_forwardA rock sample contains a radioactive isotope that has a half-life of 10,000 years. One-fourth (25%) of the parent isotope remains in a sample. How old is the sample?arrow_forwardMeihui is at NASA analyzing Moon rocks. In one of the rocks from the lunar highlands, he discovered 49 % of the original uranium-238 remains, while remaining amount of uranium-238 had decayed into lead. The half life of uranium-238 is 4.5 × 109 years. Assume the only decay product is lead. How old is the lunar maria rock in billions of years (109 years)?arrow_forward
- Source A has a half-life of 10 million years, and source B has a half-life of 5 million years. After 10 million years, what percent of each source remains? A. 50% of source A and 25% of source B B. 50% of source A and 0% of source B C. 25% of source A and 25% of source B D. 25% of source A and 0% of source Barrow_forwardC^14, a form of carbon that is used to find the age of fossils has a half life of 5730 years. how much of a 10 gram sample is left after 13,000 years?arrow_forwardif the amount of the parent isotope in the original sample of a rock had been 48 grams, about how much would have been left after three half-lives?arrow_forward
- 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?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_forwardIf there were originally 400 grams of carbon-14 in an object, how many grams would remain after 3,200 years?arrow_forward
- The half-life of carbon-14 is 5600 years. If a piece of charcoal made from the wood of a tree shows only 73% of the carbon-14 expected in living matter, when did the tree die?arrow_forwardIn a certain rock, the ratio of lead atoms to uranium atoms is 0.300.Assume that uranium has a half-life of 4.47 × 10^9 y and that the rock had no lead atoms when it formed. How old is the rock?arrow_forwardAn igneous rock contains a radioactive Isotope that has a half life of 10 million years. Careful analysis shows that only one quarter of the original concentration of the parent isotope is left. How old is the igneous rock ?arrow_forward
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