What do scientists compare to date fossil and rock samples?
isotopes
half-l...
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Chemistry, 22.06.2019 07:30
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 19:00
What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-
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Chemistry, 22.06.2019 22:10
What is the indicator of the number of ions in solution? the amount of conductivity the amount of precipitate the amount of solute added
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Chemistry, 23.06.2019 06:30
Acompound has the molecular formula c3h8. which class of organic compounds does it belong to?
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