What caloric content does the alcohol (ethanol) in a 6-oz glass of wine (177 mL) have?

The heat of combustion of ethanol, C2H5OH(l), is -1367 kJ/mol. A batch of sauvignon blanc wine contains 10.6% ethanol by mass. 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?

Mass of alcohol=Density*volume=177*1
=177g
Mass of ethanol=177*10.6/100
=18.762g
Mol of ethanol=Mass/Mr
=18.762/46
-0.41mol(approx)
Caloric content=specific heat* mol
=-1367*0.41
=-560.47

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