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Solution: Ethylene glycol (C2H6O2) is a common automobile antifreeze, dissolving in water to make a nonelectrolytic solution. A certain ethylene glycol solution is 30.0% by mass. What is the concentration of the solution in units of molality (m)?  

Problem

Ethylene glycol (C2H6O2) is a common automobile antifreeze, dissolving in water to make a nonelectrolytic solution.

A certain ethylene glycol solution is 30.0% by mass. What is the concentration of the solution in units of molality (m)?