Answers: 2
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 03:30
If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?
Answers: 1
Chemistry, 22.06.2019 23:30
With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals
Answers: 3
Difference between laboratory thermometer and clinical thermometer...
Biology, 26.05.2021 18:00
Arts, 26.05.2021 18:00
History, 26.05.2021 18:00
Business, 26.05.2021 18:00
History, 26.05.2021 18:00
History, 26.05.2021 18:00
Mathematics, 26.05.2021 18:00
Mathematics, 26.05.2021 18:00
Mathematics, 26.05.2021 18:00
Chemistry, 26.05.2021 18:00
Mathematics, 26.05.2021 18:00
Mathematics, 26.05.2021 18:00