To prepare a 2 m solution of potassium nitrate (kno3), which quantities must be measured? the mass of the and the volume of the must be measured. copy they both have the same choices. a. solute b. solution c. solvent

To prepare a 2 mol·L⁻¹ solution of KNO₃, you must measure the mass of the A. solute and the volume of the B. solution.

The formula for molar concentration (c) is

c = moles of solute/litres of solution

∴ You measure out a mass of KNO₃ equivalent to two moles (202.20 g), and then you add enough water to make the volume of solution up to 1 L.

the correct answer is:

a. formation of precipitation