Find the molarity and molality of a solution ethanol (MM 46 g /mol) in water in which the mole?

... fraction of ethanol is 0.04 (assume the density of water is 1) or:... fraction of ethanol is 0.04 (assume the density of water is 1)

... fraction of ethanol is 0.04 (assume the density of water is 1)

or:... fraction of ethanol is 0.04 (assume the density of water is 1)

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