posted by sumit .
calculate the osmotic pressure of a solution obtained by mixing 100ml of 0.25M solution of urea and 100ml of 0.1m solution of cane sugar at 293k
pi = MRT
I suppose you are to assume that 0.1m = 0.1M.
Then 100 mL x 0.25 = millimols urea.
100 mL x 0.1M = millimols sugar.
Total M = total millimols/total mL.
Solve for pi.