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17 November, 10:24

Starting with 100 grams of uranium-238, after one half life has gone by, how many grams of uranium-238 will remain?

A._12.5 grams

B._25 grams

C._50 grams

D._100 grams

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Answers (1)
  1. 17 November, 13:53
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    Answer C, 50 grams.

    This is because a half life is the time it takes for a sample of an unstable isotope to spontaneously so that half of the original sample remains
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