Chemistry, 30.06.2019 14:40 anyaimartinez1901
Chromatography is the only way to separate a mixture of different kinds of molecules .true or fales. why?
Answers: 1
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.
Answers: 2
Chemistry, 22.06.2019 12:00
Explain what happens at the saturation point when adding salt to water at room temperature.
Answers: 1
Chemistry, 22.06.2019 13:30
Table sugar completely dissolved in water is an example of a?
Answers: 1
Chromatography is the only way to separate a mixture of different kinds of molecules .true or fales....
Biology, 22.12.2020 18:20
History, 22.12.2020 18:20
English, 22.12.2020 18:20
History, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20
Physics, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20
Mathematics, 22.12.2020 18:20