How long would it take, in minutes, for the amount of potassium-44 to decrease from 32.0 mg to 4.00 mg?
回答 (2)
2020-11-20 10:55 am
✔ 最佳答案
Half-life of potassium-44 = 22 min(4.00 mg)/(32.0 mg) = 1/8 = (1/2)³
No. of half-lives taken = 3
Time taken = (22 min) × 3 = 66 min
2020-11-20 11:44 am
(4.00 mg) / (32.0 mg) = 1/8 = (1/2)^3
So 3 half-lives have passed.
3 x 12 min = 36 minutes
So 3 half-lives have passed.
3 x 12 min = 36 minutes
收錄日期: 2021-04-23 23:07:12
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