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Define Molality.Calculate molality(m) of 10gm of Glucose (C&H120) in 90gm of Water |
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Answer» -Molality, also called molal concentration, is a measure of the concentration of a solute in a solution in terms of amount of substance in a specified amount of mass of the solvent.- so firstly we have to calculate the moles of glucose10*1/180.16 = 0.0555 ( as the molar mass of glucose= 180.1559)These are dissloved in 90 g of water.first convert mass into kilogram =90/1000= 0.090 kg0.090 kg water = 0.0555 moles of glucoseso 1 kg of water=1*0.0555/0.090 = 0.6166 moles of glucoseround about of 0.6166 will be 0.617 which is our answer |
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