Suppose you have an impure solid that needs to be purified. the solid is insoluble in cold water and slightly soluble in hot water; it’s soluble in both cold and hot ethanol; it’s insoluble in cold toluene and soluble in hot toluene; and it’s slightly soluble in cold acetic acid and soluble in hot acetic acid. which solvent would be the most suitable for recrystallizing the impure solid? explain your reasoning.
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Chemistry, 21.06.2019 21:30
An alcohol thermometer makes use of alcohol's changing in order to measure temperature. as the temperature goes up, the alcohol contained in the thermometer increases in volume, filling more of the thermometer's tube.
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According to the tide table below what time of day will the highest tide occur?
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Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.
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Suppose you have an impure solid that needs to be purified. the solid is insoluble in cold water and...
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