Chemistry
posted by Tanya on .
What mass of ethylene glycol C2H6O2, the main component of antifreeze, must be added to 10.0 L water to produce a solution for use in a car's radiator that freezes at 23.3 degrees Celsius? Assume the density for water is exactly 1 g/mL

Use the freezing point depression
23.3=molessolute/10kgwater * .52
calculate the moles of solute (tehylene glycol) and convert that to mass. 
A small correction here to correct a typo. The .52 should be 1.86.