Mass = 15 g
Volume = 500 ml
Therefore, 0.262 mol of particles present in 1 litre of solution and 0.131 mol of particles present in 500 ml of solution.
Each mole of sucrose gives 1 mol of particles.
Each mole of NaCl gives 2moles of particals.
Mass of C12H22O11 be X g and
Mass of NaCl is (15 - X) g
Sucrose is 81.42 %
NaCl is 18.57%