`500 mL` of a glucose solution contains `6.02 xx 10^(22)` molecules. The concentration of the solution is :

100 ml urea solution contains 6 xx 10^20 molecules of urea. What is the concentration of the solution.

50 mL of an aqueous solution of glucose C_(6)H_(12)o_(6) (Molar mass : 180 g/mol) contains 6.02 xx10^(22) molecules. The concentration of the solution will be?