Determine the solution of ethanol and water
Consider a solution of ethanol, C2H5OH, and water in which the mole fraction of ethanol is 0.0820. The density of the solution is 0.978 g/mL. Calculate the molality, molarity and percent by mass of the solution of ethanol and water.
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A pharmaceutical preparation made with ethanol (c2h5oh) iscontaminated with methanol (ch3oh). a sample of vapor above theliquid mixture contains 97/1 mass ratio of c2h5oh to ch3oh.
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A longitudinal standing wave is established in a tube open at one end only. In air, the fundamental frequency is 110 Hz. What is the frequency of the 3rd harmonic when helium fills the tube? Take the speed of sound in helium to be three times as g
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