Chemistry, 06.10.2019 08:00 amykookie24
The half life of a radioactive element is 2 million years. a mass of rock originally contained 200g of this element. how many grams of the element are left after 4 million years?
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Chemistry, 21.06.2019 17:30
What is the percentage by mass of silicon (si) in iron aluminum silicate (fe3al2(sio4)3)?
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Chemistry, 23.06.2019 00:30
What are the advantages of using the metric system? designed as a decimal system making conversions simpler more accurate system of measurement has prefixes that correspond to an amount to use with all base units used by the entire scientific community
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Chemistry, 23.06.2019 02:30
When the ionic compound nabr dissolves in water, brβ ions are pulled into solution by the attraction between what two particles? a. the na+ and brβ ions b. the na+ ion and the negative end of a water molecule c. the brβ ion and the positive end of a water molecule d. the brβ ion and the negative end of a water molecule
Answers: 1
Chemistry, 23.06.2019 04:31
2ki + pb(no3)2 β 2kno3 + pbi2 determine how many moles of kno3 are created if 0.03 moles of ki are completely consumed.
Answers: 1
The half life of a radioactive element is 2 million years. a mass of rock originally contained 200g...
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