Question

the diagram below is a model of two solutions. each pink ball represents one particle of solute. which solution has a higher concentration of pink particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Count the number of solute particles

Solution A has 11 pink balls (solute particles). Solution B has 9 pink balls (solute particles).

Step2: Recall the formula for concentration

Concentration \(C=\frac{\text{Amount of solute}}{\text{Volume of solvent}}\). Here, the volume of solvent (\(45\) mL) is the same for both solutions.

Step3: Compare concentrations

Since \(C_A=\frac{11}{45}\) and \(C_B = \frac{9}{45}\), and \(\frac{11}{45}>\frac{9}{45}\) (because when denominators are equal, the fraction with the larger numerator is larger).

Answer:

Solution A