Chemistry, 20.05.2021 21:50 wrivera32802
The percent of a solute in a solution is defined as the mas of solute in 100 grams of solution. A 20% solution of sulfuric acid contains 20% pure H2SO4 by mass and 80% pure H2O by mass. In 100 grams of H2SO4 there are 20 grams of sulfuric acid and 80 grams of water. Assume water is the solvent. If 18.0 grams of sodium sulfate are dissolved in 207.0 grams of water, what is the percent concentration of this solution?
Answers: 2
Chemistry, 22.06.2019 01:20, whrjegt4jrnfdvj
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 11:30, ayoismeisjjjjuan
Which statement best describes the flow of energy in this scenario
Answers: 1
The percent of a solute in a solution is defined as the mas of solute in 100 grams of solution. A 20...
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