How many grams of sucrose (C_12 H_22 O_11, 342.3 g/mol) would be needed to make 2.5…

How many grams of sucrose (C_12 H_22 O_11, 342.3 g/mol) would be needed to make 2.5 L of a solution with an osmotic pressure of 14 atm at 25 degree C? (R = 0.0821 L middot atm/K middot mol) A) 0.57 g B) 6.8 g C) 2.0 times 10^2 g D) 4.9 times 10^2 g E) 5.8 times 10^3 g