SOLUTION: Suppose a sample of a radioactive substance weighs 30 mg. One year later, the sample weighs 27.5 mg. What is the half-life of this substance? (Round your answer to two decimal plac
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Question 1153051: Suppose a sample of a radioactive substance weighs 30 mg. One year later, the sample weighs 27.5 mg. What is the half-life of this substance? (Round your answer to two decimal places.)
Found 2 solutions by josgarithmetic, greenestamps:
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
,
AMP Parsing Error of [log((0.9166667)^x=log((1/2))]: Invalid function: opening bracket expected at /home/ichudov/project_locations/algebra.com/templates/Algebra/Expression.pm line 88.
.
half-life, 7.97 years
Answer by greenestamps(13209) (Show Source): You can put this solution on YOUR website!
Let x be the half-life in years. Then 1 year is (1/x) half-lives.
to 2 decimal places
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