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What weight of the non-volatile solute, urea ($NH_2 - CO – NH_2$) needs to be dissolved in 100g of water, in order to decrease the vapour pressure of water by 25%? What will be the molality of the solution?

1 Answer

18.52m
Hence (A) is the correct answer.
answered Jun 19, 2014 by sreemathi.v
 
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