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13 August, 05:39

A 400-gram sample of a radioactive nuclide is left to decay for 30 hours. At the end of 30 hours, only 200 grams of the sample is left. What is the half-life of the nuclide sample

A) 10 hours

B) 1.5 days

C) 30 hours

D) 0.5 hours

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Answers (1)
  1. 13 August, 05:42
    0
    Half life means when the sample of a nuclide decreases by half in Mass so half of 400 is 200 grams and it took 30 hours to reach that value thus its the half life of the Sample
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