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OpenStudy (anonymous):
After two half-lives, a sample contains 10 grams of parent isotopes. How many grams of the parent isotope were present to start?
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OpenStudy (anonymous):
whats the answers for the question
OpenStudy (anonymous):
hello u there
OpenStudy (gorv):
u know what half live means ??
TheSmartOne (thesmartone):
@gorv You forgot to say Welcome to Open Study!!
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