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How long will it take for 52.0% of a 0.00890 mg sample of radioactive iodine-131 to decay?

How long (in days) will it take for 52.0% of a 0.00890 mg sample of radioactive iodine-131 to decay? The half-life of iodine-131 is 8.10 days.

2007-04-29 15:10:03 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

1 answers

-8.1*ln(0.48)/0.693 = 8.58 days.

2007-04-29 22:57:33 · answer #1 · answered by ag_iitkgp 7 · 0⤊ 0⤋

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