Answers: 3
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 12:30
The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?
Answers: 1
Chemistry, 22.06.2019 16:30
Correct relationship between molecular formula and empirical formula
Answers: 1
What is the percent by the volume of a solution formed by mixing 25mL of isopropanol with 45 mL of w...
Mathematics, 25.05.2021 05:10
Mathematics, 25.05.2021 05:10
World Languages, 25.05.2021 05:10
Mathematics, 25.05.2021 05:20
French, 25.05.2021 05:20
Mathematics, 25.05.2021 05:20
Mathematics, 25.05.2021 05:20
Business, 25.05.2021 05:20
Mathematics, 25.05.2021 05:20
Mathematics, 25.05.2021 05:20
Mathematics, 25.05.2021 05:20