ayomidedaodu0 ayomidedaodu0

04-10-2017
Chemistry

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how many mg of a 31-mg sample of calciul 47 remains after 45 days

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pimuang50 pimuang50

04-10-2017

36 days is 8 half-life periods

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pandagallola pandagallola

04-10-2017

36 days is 8 half-life periods

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