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OpenStudy (anonymous):
Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00 g of 32P, how many grams will remain after 84.0 days ?
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OpenStudy (anonymous):
Every 14 days it loses half its mass 14 days, 2 g 28 days, 1 g 42 days, 0.5 g 56 days, 0.25 g 70 days, 0.125 g 84 days, 0.0625 g
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