1. We start with 400 atoms of Uranium-238. How many remain after 4.5 billion years? _______ After 9 billion years? _______ After 13.5 billion years? ________
2 . How long will it take for ½ of the original amount of Rubidium-87 to decay? _______
3. Carbon-14 has a half-life of 5,730 years. How does that compare to those listed in the chart?
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What possible advantages or disadvantages would this give C-14 when used for radiometric dating?
Chart : h t t p : / / i m g u r . c o m / B 2 w R G Y D
I honestly have no idea how to do this kind of stuff, please help
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You should have a text book showing you how to do problems like these, but for number one, Uranium-338 is commonly known as an isotope of Uranium, so 400 Atoms of Uranium-338 dividing by 4.5 billion years, then 9 billion, and 13.5 billion.
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