12% of 750mL = 90mL
90mL * 0.789g/mL * 1mol/46.06g = 1.54 mol
Wine is approximately 12% ethanol (CH3CH2OH) by volume. Ethanol has a molar mass of
46.06 g/mol and a density 0.789 g/mL. How many moles of ethanol are present in a 750-mL
bottle of wine?
4 answers
12% v/v means 12 mL ethanol in 100 mL total liquid so in 750 mL bottle of wine there is 12 x (750/100) = 90 mL of ethanol. How much does that weigh? That's 90 mL x 0.789 g/mL = 71 g.
mol = grams/molar mass = 71/46.06 = ?
mol = grams/molar mass = 71/46.06 = ?
71gmol
1.54 mole of ethanol
1 answer