Question

the diagram below is a model of two solutions. each 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: Calculate concentration of pink particles in Solution A

Concentration is calculated as \( \frac{\text{Number of solute particles}}{\text{Volume of solvent}} \). For Solution A, number of pink particles \( n_A=3 \), volume of solvent \( V_A = 20\space mL \). So concentration \( C_A=\frac{3}{20}= 0.15\space particles/mL \)

Step2: Calculate concentration of pink particles in Solution B

For Solution B, number of pink particles \( n_B = 3 \), volume of solvent \( V_B=30\space mL \). So concentration \( C_B=\frac{3}{30}=0.1\space particles/mL \)

Step3: Compare the two concentrations

Since \( 0.15>0.1 \)

Answer:

Solution A