50. A 100.0 mL sample of an aqueous solution at 27°C contains 15.2 mg of an unknown nonelectrolyte compound. If the solution has an osmotic pressure of 7.60 torr, which one is the unknown compound? (A) C8H18N2O2 (B) C6H12O6 (C) C12H22O11 (D) C20H22O7
(E) C21H20O11