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O 8. Use a scientific or graphing calculator to solve. Thorium-228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 years? Round to 3 decimal places. Use the formula A = Age . 7.48 grams O 12.4 grams O 0.124 grams O 19.34 grams O 30.32 grams

O 8. Use a scientific or graphing calculator to solve. Thorium-228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 years? Round to 3 decimal places. Use the formula A = Age . 7.48 grams O 12.4 grams O 0.124 grams O 19.34 grams O 30.32 grams

Chemistry for Engineering Students
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter2: Atoms And Molecules
Section: Chapter Questions
Problem 2.86PAE: 2.86 For some uses, the relative abundance of isotopes must be manipulated. For example, a medical...
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Thorium-228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 years? Round to 3 decimal places. Use the formula A=A0e-kt.

O 8. Use a scientific or graphing calculator to solve. Thorium-228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 years? Round to 3 decimal places. Use the formula A = Ane . 7.48 grams 12.4 grams O 0.124 grams O 19.34 grams O 30.32 grams
Transcribed Image Text:O 8. Use a scientific or graphing calculator to solve. Thorium-228 is a radioactive substance that decays 50% every 1.9 years. How much of a 50 gram sample will exist after 22.8 years? Round to 3 decimal places. Use the formula A = Ane . 7.48 grams 12.4 grams O 0.124 grams O 19.34 grams O 30.32 grams
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