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The decay constant of 235U is 9.8 × 10^−10 y^−1. How many 235U atoms will remain in a 1.0 µg sample after 10^9 years?

The decay constant of 235U is 9.8 × 10^−10 y^−1. How many 235U atoms will remain in a 1.0 µg sample after 10^9 years?

Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter18: Nuclear Reactions
Section: Chapter Questions
Problem 25QAP
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The decay constant of 235U is 9.8 × 10^−10 y^−1. How many 235U atoms will remain in a 1.0 µg
sample after 10^9 years?

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