in a cold climate water gets frozen causing damage to the radiator of a car . Ethylene glycol is used as an antifreezing agent . Calculate the amount of ethylene glycol to be added to 4kg of water to prevent it from freezing at `-6^@`C . (`K_f` for water 1.85`Km^-1`).

Explanation

Given
`w_(1)=400g,DeltaT_(f)=6^(@)C,K_(f)=1.85Km^(-1),M_(2)` (molar mass of ethylene glycol) = 62 g
Formula used
`M_(2)=(1000K_(f)w_(2))/(w_(1)DeltaT_(f)),W_(2)=(M_(2)xxw_(1)xxDeltaT_(f))/(1000xxK_(f)xx2`,
`W_(2)=(62xx4000xx6)/(1000xx1.85xx2),W_(2)=804.32g`