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Chemistry, 22.06.2019 07:30, bbyniah123
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
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Chemistry, 22.06.2019 08:00, gomezyonathan93
An observation that requires measurement is called quantitative observable or qualitative
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How many metres further would the sound intensity be 1/2 times as much as that at a distance of 3 m...
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