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Chemistry, 21.06.2019 22:00
Afamily is one another name for a group on the table of elements.
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Chemistry, 22.06.2019 01:20
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
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Chemistry, 22.06.2019 11:00
3) in peaches, [oh]=3.16x10-11 m a) find [h+ ] b) what is the ph? c) is the solution acidic, basic, or neutral?
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Chemistry, 22.06.2019 23:00
What is the name of the enzyme that forms at the start of transcription?
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State the rules governing the number of significant figures that result from each of the following o...
History, 10.09.2019 22:30
History, 10.09.2019 22:30
History, 10.09.2019 22:30
History, 10.09.2019 22:30
English, 10.09.2019 22:30