Water’s molar mass is 18 point 0 1 g over mol The molar mass of glycerol is 92 point 0 9 g over mol At 25 times degree C , glycerol is more viscous than water. Which substance has the stronger intermolecular attraction?

At the same temperature, greater viscosity generally indicates stronger intermolecular attractions because the molecules resist flowing past one another. Glycerol is more viscous than water at 25 °C, so glycerol has the stronger intermolecular attraction. Its larger molar mass is also stated, but viscosity is the key evidence for the comparison.

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