Additional Exercises 9.1 Form I Functions Worksheet With Answers Page 13
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15Name ___________________________________
Date _________________________
9. A fossilized leaf contains 36% of its normal amount of carbon 14.
9. _______________
How old is the fossil (to the nearest year)? Use 5600 years as the
half-life of carbon 14.
10. The half-life of radium is 1690 years. If 40 grams are present now,
10. _______________
how many grams will be present in 100 years?
AE-368
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