Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222 is 3.82 days. If you begin with 88.8 milligrams of radon-222, how many milligrams will you have left after 11.5 days have passed? mg Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9 hours. How many milligrams of a 52.3 milligram sample of thallium-201 will be lost by radioactive decay during 219 hours? mg The half-life of the radioactive isotope thorium-230 is 8.00 x 10 years. How long will it take for the mass of a sample of thorium-230 to decay from 88.8 micrograms to 22.2 micrograms? years The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5.730 × 10³ years. A wooden artifact in a museum has a 14C count that is 1.56 x 10-2 times that found in living organisms. Estimate the age of the artifact. Age=1 years

Chemistry
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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Radioactive radon-222, found in many homes, is a potential health hazard.
The half-life of radon-222 is 3.82 days. If you begin with 88.8 milligrams of radon-222, how many
milligrams will you have left after 11.5 days have passed?
mg
Thallium-201 is used medically to diagnose heart problems.
The half-life of thallium-201 is
72.9 hours. How many milligrams of a 52.3 milligram sample of thallium-201 will be lost by radioactive
decay during
219 hours?
mg
The half-life of the radioactive isotope thorium-230 is 8.00 × 10 years.
How long will it take for the mass of a sample of thorium-230 to decay from 88.8 micrograms to 22.2
micrograms?
years
The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is
5.730 × 10³
years.
A wooden artifact in a museum has a
14C count that is
1.56 x 10-2 times that found in living organisms. Estimate the age of the artifact.
Age =
years
Transcribed Image Text:Radioactive radon-222, found in many homes, is a potential health hazard. The half-life of radon-222 is 3.82 days. If you begin with 88.8 milligrams of radon-222, how many milligrams will you have left after 11.5 days have passed? mg Thallium-201 is used medically to diagnose heart problems. The half-life of thallium-201 is 72.9 hours. How many milligrams of a 52.3 milligram sample of thallium-201 will be lost by radioactive decay during 219 hours? mg The half-life of the radioactive isotope thorium-230 is 8.00 × 10 years. How long will it take for the mass of a sample of thorium-230 to decay from 88.8 micrograms to 22.2 micrograms? years The radioactive isotope carbon-14 is used for radiocarbon dating. The half-life of carbon-14 is 5.730 × 10³ years. A wooden artifact in a museum has a 14C count that is 1.56 x 10-2 times that found in living organisms. Estimate the age of the artifact. Age = years
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