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time Number R (Bq) = Number of decays/time interval (in sec) time (sec) of decays interval (in sec) 60 400 316.98 270.7 212.13 0-60 19019 60-120 120 16242 250 120-180 180 12734 y= 433.05e0 180-240 240 9410 156.83 300 240-300 300 7504 125.06 250 5674 94.56 74.15 56.73 300-360 360 360-420 420 4449 200 Series1 420-480 480 3404 - Expon. (Series1) 150 100 50 time (in sec) 100 200 300 400 500 600

time Number R (Bq) = Number of decays/time interval (in sec) time (sec) of decays interval (in sec) 60 400 316.98 270.7 212.13 0-60 19019 60-120 120 16242 250 120-180 180 12734 y= 433.05e0 180-240 240 9410 156.83 300 240-300 300 7504 125.06 250 5674 94.56 74.15 56.73 300-360 360 360-420 420 4449 200 Series1 420-480 480 3404 - Expon. (Series1) 150 100 50 time (in sec) 100 200 300 400 500 600

Chemistry
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
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Calculate the initial activity of the sample, the half-life, and the predicted activity of the sample after 15 minutes. 

time Number R (Bq) = Number of decays/time of decays interval (in sec) interval time (sec) 60 (in sec) 400 0-60 19019 316.98 60-120 120 16242 270.7 120-180 180 12734 212.13 y= 433.05e 0d 9410 7504 180-240 240 156.83 300 240-300 300 125.06 250 300-360 360 5674 94.56 4449 3404 360-420 420 74.15 200 Series1 420-480 480 56.73 Expon. (Series1) 150 100 50 time (in sec) 100 200 300 400 500 600
Transcribed Image Text:time Number R (Bq) = Number of decays/time of decays interval (in sec) interval time (sec) 60 (in sec) 400 0-60 19019 316.98 60-120 120 16242 270.7 120-180 180 12734 212.13 y= 433.05e 0d 9410 7504 180-240 240 156.83 300 240-300 300 125.06 250 300-360 360 5674 94.56 4449 3404 360-420 420 74.15 200 Series1 420-480 480 56.73 Expon. (Series1) 150 100 50 time (in sec) 100 200 300 400 500 600
If the activity of a source at time t= 0 is R(0) and its half-life is T, the activity of the source at timet is: R(t) = R(0)e¬In (2)
Transcribed Image Text:If the activity of a source at time t= 0 is R(0) and its half-life is T, the activity of the source at timet is: R(t) = R(0)e¬In (2)
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