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 03:00
Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?
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Chemistry, 22.06.2019 05:00
Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change
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Chemistry, 22.06.2019 08:00
An observation that requires measurement is called quantitative observable or qualitative
Answers: 1
Classify the following as Lewis acids or Lewis bases. (NOTE: Only ONE submission is allowed for this...
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