3 g of a salt of molecular mass 30 is dissolved in 250 g water. The molality of the solution is __________.

0.4m

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100 g of a 10% solution of NaOH contains 10 g of NaOH in ______g of water.

90

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Any solvent in the _______ state would behave ideally.

Pure

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When an azeotropic mixture is distilled, its volume remains ________.


unchanged
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The sum of the mole fractions of solute and solvent is ________.

unity
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