Asked by Holly
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!
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!
Answers
Answered by
DrBob222
Here is my response to the problem on Sunday.
http://www.jiskha.com/display.cgi?id=1348448021
http://www.jiskha.com/display.cgi?id=1348448021
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