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Matilda has a 100 g rock sample. she knows that the rock contains uranium-238 and that the half-life of uranium-238 is 4.5 x 109 years. if she cuts the rock sample in half, what happens to the half-life of the uranium? the half-life increases. the half-life decreases. the half-life remains the same.
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Matilda has a 100 g rock sample. she knows that the rock contains uranium-238 and that the half-life...
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