Onionsir
Onionsir Onionsir
  • 15-03-2019
  • Chemistry
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Someone help please.

Someone help please class=

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cdreddinger
cdreddinger cdreddinger
  • 15-03-2019

After 3 half life periods you would have 5 grams of krypton left because half of 40 is 20 half of 20 is 10 and half of 10 is 5

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