12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much was there 10 years ago? What is the half-life of the substance?
12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much was there 10 years ago? What is the half-life of the substance?
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter20: Nuclear Chemistry
Section: Chapter Questions
Problem 20.106QP
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Transcribed Image Text:12. A year ago there were 4 grams of a radioactive substance. Now there are 3 grams. How much
was there 10 years ago? What is the half-life of the substance?
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