How many days must elapse for a 0.80 Mg sample of iodine-131 in the thyroid to decay to 0.10 Mg?
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I131 ---> beta + Xe131
t1/2 = half-life 8.02 days
T = [ - t1/2 / 0.6931 ][ ln(Q2 / Q1) ]
T = ellapsed time days
Q2 = final quantity 0.10mg
Q1 = initial quantity 0.80mg
T = 24.06 days
t1/2 = half-life 8.02 days
T = [ - t1/2 / 0.6931 ][ ln(Q2 / Q1) ]
T = ellapsed time days
Q2 = final quantity 0.10mg
Q1 = initial quantity 0.80mg
T = 24.06 days
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