Posted by Holly on .
I've got a similar question as a previous student.
What is a minimum volume (in gallons) of ethylene glycol (CH2OHCH2OH, an antifreeze) that has to be added to 3.00 gal of water if you desire this engine cooling solution (for a auto radiator) NOT to be frozen below - 25.9 oC - a very cold Siberian or Canadian winter temperature?
The density of water and the antifreezer is 0.9975 g/mL and 1.141 g/mL respectively.
Hint: You must first calculate a minimum value of the required molality of the antifreezer first, then find the reqiuired volume based on it.
What is molar mass of ethylene glycol? g/mol
The required molality of ethylene glycol: m
The required volume of ethylene glycol: gal.
I've got the mass and I've got the molality but I can't get from there to the gallons of ethylene glycol would be needed. I'm missing the steps there so any help would be great. Thanks!