Half-Life   163 days     Current Activity   0.10 μCi     Number of Half-Lives between now and 326 days from now         Remaining activity 326 days from now (as a percentage)    %   Report to 2 significant figures Remaining activity 326 days from now (in μCi)    μCi   Report to 2 significant figures

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
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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45Ca is a radioisotope with a half-life of approximately 163 days.  A student works with a sealed source of 45Ca with a current activity of 0.10 μCi. Complete the following table.

Atomic Number        
Mass Number        
Number of Neutrons        
Half-Life   163 days    
Current Activity   0.10 μCi    
Number of Half-Lives between now and 326 days from now        
Remaining activity 326 days from now (as a percentage)    %   Report to 2 significant figures
Remaining activity 326 days from now (in μCi)    μCi   Report to 2 significant figures
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