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.

Question

Physics

Jessie Mccall

9 December, 11:14

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.

+2

Answers (2)

Know the Answer?

Sarah Price · 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

Brielle Duffy · Answer 2

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