A sample of Uranium-234 has been decomposing. If the original mass of 234U is 2.57milligrams, how long will it take so that only 1.21milligrams is left? The half-life of the element uranium-234 (234U) is 25 thousand yrs old. Radioactive decay) is denoted by, In(N;) = -kt + In(No) t1/2 = 0.693/k

A sample of Uranium-234 has been decomposing. If the original mass of 234U is 2.57milligrams, how long will it take so that only 1.21milligrams is left? The half-life of the element uranium-234 (234U) is 25 thousand yrs old. Radioactive decay) is denoted by, In(N;) = -kt + In(No) t1/2 = 0.693/k

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

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Question

A sample of Uranium-234 has been decomposing. If the
original mass of 234U is 2.57milligrams, how long will it
take so that only 1.21milligrams is left?
The half-life of the element uranium-234 (234U) is 25
thousand yrs old. Radioactive decay) is denoted by,
In(N;) = -kt + In(No)
t1/2 = 0.693/k

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