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 03:00
Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?
Answers: 2
Chemistry, 22.06.2019 20:30
Which states of matter have particles that move independently of one another with very little attraction?
Answers: 1
Chemistry, 23.06.2019 07:00
Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?
Answers: 1
How do you feel when you are moving...
Mathematics, 28.10.2019 23:31
Physics, 28.10.2019 23:31
English, 28.10.2019 23:31
Social Studies, 28.10.2019 23:31
Social Studies, 28.10.2019 23:31
Chemistry, 28.10.2019 23:31
English, 28.10.2019 23:31