Chemical Kinetics Worksheet - Answer Key

 

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  1. What is a half-life?

    This is the amount of time that it takes a sample to decrease to ½ of its initial value. 
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  3. Bismuth-210 is radioactive and decays by β particle production and has a half-life of 5 days.
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    2. How much of a 1.00-g sample of 210Bi is left after 2 weeks?

      0.14 g 210 Bi
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    4. How long does it take for 75% of a sample of 210Bi to decay?

      t = 10 days