Molarity and molality of a solution of an liquid (mol. wt. = 50) in aqueous solution is 9 and 10 respectively. What is the density of solution?

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1 g/cc

0.95 g/cc

1.05 g/cc

1.35 g/cc

answer is D.

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Detailed Solution

m=1000M1000d−M×MSolute ⇒d=1000×910+9×50×11000=1.35g/mL