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Unformatted text preview: Vodka is 80 proof what is 40% by volume ethanol. ( 2 proof = 1 volume %) the mass % of ethanol in Vodka? Density of ethanol is 0.789 g/mL Density of Vodka is 0.973 g/mL Now find the molarity (M) of ethanol in Vodka Mass/Volume % Sub Units: Grams solute/ 100 mL of solution (concentrated) (most popular): mg solute/dL of solution (dilute) Standard Saline solution is 0.92% NaCl. What is the molarity (M) of this solution? Very dilute solutions: ppm = 1 per 1,000,000 DP’s working definitions ppm = mg/L or μg/mL ppb = μg/L or ng/mL ppt = ng/L or pg/mL No need to worry about density 40 ppb Pb in paint is what molarity (M)?...
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 Fall '06
 Paul
 Molarity, Mole, pH, sub units

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