the diagram below is a model of two solutions. each ball represents one particle of solute. which solution…

Explanation:

Step1: Count the number of purple particles

Solution A has 5 purple particles. Solution B has 6 purple particles.

Step2: Calculate the concentration of purple particles

Concentration formula: (C=\frac{n}{V}) (where (n) is the number of solute particles and (V) is the volume of solvent). For Solution A: (C_A=\frac{5}{40}=\frac{1}{8}) particles per mL. For Solution B: (C_B=\frac{6}{50}=\frac{3}{25}) particles per mL.

Step3: Compare the concentrations

Find a common denominator. (\frac{1}{8}=\frac{25}{200}) and (\frac{3}{25}=\frac{24}{200}). Since (\frac{25}{200}>\frac{24}{200}), (C_A > C_B).

Answer:

Solution A