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OCW Scholar - Introduction to Solid State Chemistry 16 Online
OpenStudy (anonymous):

You are given 230 grams of a substance with a half-life of 0.75 years. How much will remain after 3 years? 230 grams 57.5 grams 14.38 grams 7.19 grams

OpenStudy (anonymous):

3 years tell you that the substance would have undergone 4 half lives(3/0.75=4) in 3 years that would be half of half of half of half of (that is 1/16 th part of) the initial molecules are left of the molecules initially present in the 230gm then the left mass would be 14.38

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