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Chemistry, 19.12.2019 21:31 isabellebisio
Exactly how much time must elapse before 16 grams of potassium-42decays, leaving 2 grams of the original isotope? (1) 8 × 12.4 hours (3) 3 × 12.4 hours(2) 2 × 12.4 hours (4) 4 × 12.4 hours
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Exactly how much time must elapse before 16 grams of potassium-42decays, leaving 2 grams of the orig...
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