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 the concentration of pink particles in Solution A

Concentration = \(\frac{\text{Number of pink particles}}{\text{Volume of solvent}}\). In Solution A, there are 9 pink particles and solvent volume is \(40\space mL\). So concentration \(C_A=\frac{9}{40}= 0.225\space\text{particles/mL}\)

Step2: Calculate the concentration of pink particles in Solution B

In Solution B, there are 2 pink particles and solvent volume is \(45\space mL\). So concentration \(C_B=\frac{2}{45}\approx0.044\space\text{particles/mL}\)

Answer:

Solution A