17. A solution containing 10 g per
dm3 of urea is isotonic with a 5 % solution of a nonvolatile solute. The molecular mass of this nonvolatile solute is
a. 350 g mol-1
b. 200 g mol-1
c. 250 g mol-1
d. 300 g mol-1
Ans. d
(12)
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