Chemical Kinetics Worksheet - Answer Key
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- What is a half-life?
This is the amount of time that it takes a sample to decrease to ½ of its initial value.
- Bismuth-210 is radioactive and decays by β particle production and has a half-life of 5 days.
- How much of a 1.00-g sample of 210Bi is left after 2 weeks?
0.14 g 210 Bi
- How long does it take for 75% of a sample of 210Bi to decay?
t = 10 days