Absolute_and_Relative_Dating

# Absolute_and_Relative_Dating - Absolute and Relative Dating...

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1. If you are given a 2,900 gram sample of Hydrogen, and hydrogen has a half-life of 2,450 years. Calculate the following: a. How much hydrogen is left after 19,600 years? b. How many half-lives must occur to reach 5.66 grams of hydrogen? c. How many half-lives must occur to reach 45.31 grams? d. How many years have passed to get to the point in question B? 2. Sodium-24 has a half-life of 15 hours. How much sodium-24 will remain in an 18 gram sample after 60 hours? 3. After 42 days a 2.0 gram sample of phosphorus-32 contains only 0.25 gram of the isotope. What is the half-life of phosphorus-32?
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