SOLUTION: The half-life of Calcium-47 is 4.536 days. What is the daily decay rate? Give your answer in both decimal and percent form.
a) As a decimal, the daily decay rate is _____?
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Question 1129328: The half-life of Calcium-47 is 4.536 days. What is the daily decay rate? Give your answer in both decimal and percent form.
a) As a decimal, the daily decay rate is _____?
Found 2 solutions by greenestamps, josgarithmetic:
Answer by greenestamps(13203) (Show Source): You can put this solution on YOUR website!
If the half life is 4.536 days, then 1 day is 1/4.536 of a half life.
Then the amount left after 1 day is
= 0.8583 to 4 decimal places.
The daily decay rate is then 1-0.8583 = 0.1417.
The decay rate as a decimal is 0.1417; as a percent it is 14.17%.
Answer by josgarithmetic(39623) (Show Source): You can put this solution on YOUR website!
y, amount present after x days
p, initial amount
(
Half-life in days, 4.536
, each day 0.8583 fraction is retained; 0.1417 fraction is decayed.
14.17% decay per day.
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