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2 November, 09:52

Assuming the density of the wine to be 1.0 g/ml, what caloric content does the alcohol (ethanol) in a 6-oz glass of wine (177 ml) have? express your answer using two significant figures.

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  1. 2 November, 10:16
    0
    mass = 177 x 1.0 g/mL = 177 g mass ethanol = 177 x 10.6/100 = 18.8 g moles = 18.8 g/46.069 g/mol = 0.408 1367 kJ/mol x 0.408 mol = 557.9 kJ
  2. 2 November, 10:22
    0
    The answer is 133.06 kcal.

    Explanation:

    having the dа ta:

    mw=mass of wine=177 g

    me=mass of ethanol = (10.6/100) * 177=18.76 g

    ne=moles of ethanol=0.408 moles

    qe=caloric content=1367 * ((0.106*177) / (46.07)) = 556.7 kJ=133.06 kcal
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