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 10:30
Apiece of metal with a length of 1.42 cm was measured using four different instruments. which of the following measurements is the most accurate?
Answers: 3
Chemistry, 22.06.2019 13:10
Select the correct answer a modure consists of glucose and water. what is the percent composition of glucose in the mixture if it contains 1.3 moles of glucose (cho total mass of the mature is 276 grams? ) and the a 1775
Answers: 1
How many moles are in 86.8g of Na2O...
Chemistry, 09.11.2019 06:31
Mathematics, 09.11.2019 06:31
History, 09.11.2019 06:31
History, 09.11.2019 06:31
Mathematics, 09.11.2019 06:31
Physics, 09.11.2019 06:31
Biology, 09.11.2019 06:31
History, 09.11.2019 06:31
History, 09.11.2019 06:31
Chemistry, 09.11.2019 06:31
Biology, 09.11.2019 06:31