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2016-01-05T15:51:19+05:30

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2016-01-05T18:40:30+05:30
Molality = no. of moles of solute/weight of solvent(in kg)
no. of moles = given mass / molar mass = 3/180 = 1/60moles
weight of solvent in kg = 30/1000 = 3/100 kg

therefore,

molality = (1/60)/(3/100) = 1/60*100/3 = 10/18 = 0.56 molal
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