What is the mass percent , %(m/m), of an aqueous solution prepared by dissolving 12.5 g of KNO₃ in 125 g of water?

Question

Quizplus · Accepted Answer

To find the mass percent (%(m/m)), we need to divide the mass of the solute by the mass of the solution and multiply by 100. Mass of KNO₃ = 12.5 g Mass of water = 125 g Total mass of solution = 12.5 g + 125 g = 137.5 g %(m/m) = (mass of KNO₃/total mass of solution) x 100 %(m/m) = (12.5 g/137.5 g) x 100 %(m/m) = 9.09% Therefore, the correct answer is C) 9.09%.

What Is the Mass Percent , %(M/m), of an Aqueous