romio777 romio777
  • 17-10-2017
  • Physics
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Answer for this question please

Answer for this question please class=

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ssender
ssender ssender
  • 17-10-2017
the half life is 20 mins since it takes 20 mins for it to be half of what it was before
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celewis2001 celewis2001
  • 17-10-2017
20 minutes is the half life
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