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Ethylene glycol is used as an antifreeze in a cold climate. Mass of ethylene glycol which should be added to 4 kg of water to prevent it from freezing at `-6^(@)"C"` will be `(K_(f)" for water=1.86 K kg mol"^(-1))," and molar mass of ethylene glycol=62g"//"mol"^(-1))`?

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`DeltaT_(f)=6`
`6=1086xx(x)/(4)`
`x=12.90"mole"`
Molar mass of ethylene glycol=62
Mass of ethylene glycol=800

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