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Determine the molarity of an antifreeze solution containing 250g water mixed with 222g ethylene glycol (C2H6O2). The density of this solution is 1.07g/ml.

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No. of moles of ethylene glycol = nB

Molar mass of C2H6O2 = (24 + 6 + 32)g mol–1

NB = 222g/62mol-1 = 3.58mol

mass of solution = (250 + 222)g = 472g

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