Chemistry

Chemistry, 03.10.2019 08:20, DuckieTime

Aresearcher dilutes 30.0 ml of ethanol to 300.0 ml with distilled water. what is the percentage concentration by volume of the resulting solution? 9.09.10%

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Physics, 24.06.2019 08:00, manaisialockhart12

If 15 ml of olive oil, 30 ml of ethanol, and 55 ml of distilled water were poured into a 100 ml beaker, in which order would the liquids layer from top to bottom? a. distilled water, olive oil, ethanol b. ethanol, olive oil, distilled water c. ethanol, distilled water, olive oil d. distilled water, ethanol, olive oil

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Chemistry, 20.08.2019 23:30, smhrosepetals

Concentration of ethanol in water solution by distillation from a fermentation is produced a mixture of ethanol in water. the concentration of ethanol is 4 mol %. the ethanol is to be concentrated by distillation, and the distillate must contain 38 volume % ethanol. at 20 °c this is equivalent to 31.5 mass % ethanol. a) convert 31.5 mass % ethanol to mol %. b) a distillation column is at hand. it can provide a distillate of 30 mol % ethanol and a bottom product of 1.0 mol % c) is the process feasible? d) draw a block diagram for the distillation process. e) calculate the yield of ethanol after the distillation, i.e. ethanol in the distillate compared to ethanol in the feed.

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Chemistry, 10.10.2019 00:30, dragongacha777

Astudent obtains 100 ml of a 0.0003321 m solution of agno 3 (silver nitrate). he labels this "solution #1". he then pipets 5 ml of solution #1 into a 50 ml volumetric flask and dilutes to the mark with water. he labels this "solution #2." he then pipets 10 ml of solution #1 into a 250 ml volumetric flask and dilutes to the mark with water. this is "solution #3". finally, the prepares "solution #4" by pipetting 18 ml of solution #3 into a 50 ml volumetric flask and dilutes to the mark with water. draw relational pictures to illustrate the relationship between the original solution and all of the diluted solutions that the student prepared. what is the concentration of silver nitrate in solution #4?

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Chemistry, 10.10.2019 05:00, kolin89

If 2.0 ml of concentrated h2so4 is diluted with distilled water to 250 ml in a volumetric flask, what is the resulting concentration in units of molarity and normality? what is the volume of the solution in (5) that should be diluted with distilled water to make a 0.025 n solution of sulfuric acid?

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Aresearcher dilutes 30.0 ml of ethanol to 300.0 ml with distilled water. what is the percentage conc...

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