When 3.81 g of a nonclectrolyte solute is dissolved in water to make 465 ml of solution at 23 C, the solution exerts an osmotic pressure of 873 torr. What is the molar concentration of the solution? concentration: M How many moles of solute are in the solution? nol moles of solute: What is the molar mass of the solute? How many moles of solute are in the solution? moles of solute: mol What is the molar mass of the solute? g/mol molar mass: 19 PM