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Radium-223 has a half-life of 11.4 days.Approximately how long would it take for the activity of a sample of Radium-223 to decr...Asked by sierra
Radium-223 has a half-life of 11.4 days. Approximately how long would it take for the activity of a sample of 223Ra to decrease to 2.00 % of its initial value?
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Answered by
DrBob222
Refer to your other posts.
Almost all of these can be worked with two thoughts.
#1.
k = 0.693/t<sub>1/2<sub>
#2. ln(No/N) = kt where No = initial and N = final, k is from the #1 calculation and t<sub>1/2</sub> is the half life.
Almost all of these can be worked with two thoughts.
#1.
k = 0.693/t<sub>1/2<sub>
#2. ln(No/N) = kt where No = initial and N = final, k is from the #1 calculation and t<sub>1/2</sub> is the half life.
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