Question

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.

Answer 1

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

Answer 2

Answer:

The answer is 133.06 kcal.

Explanation:

having the data:

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