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  3. 1. a fossil is found to have a 14c level of 87.0%

1. A fossil is found to have a 14C level of 87.0% compared to living organisms....

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Question

Chemistry

1. A fossil is found to have a 14C level of 87.0% compared toliving organisms. How old is the fossil?

(answer in years)

2.Iodine-131 is a radioactive isotope. After 3.00 days, 77.2% ofa sample of 131I remains. What is the half-life of 131I?

(answer in days)

Answer & Explanation Solved by verified expert
4.1 Ratings (724 Votes)
1 All the radiactive nucleii undergo first order reactions For a first order reaction rate constant k 2303 t x log Mo M Where Mo initial mass M Mass    See Answer
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