Question

the diagram below is a model of two solutions. each pink ball represents one particle of solute. solution a solvent volume: 45 ml solution b solvent volume: 20 ml 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 Solution A

Concentration formula: \(C=\frac{n}{V}\) (where \(n\) is the number of solute particles, \(V\) is the volume of solvent). For Solution A, assume \(n = 10\) (count the pink balls), \(V=45\space mL\). So \(C_A=\frac{10}{45}=\frac{2}{9}\approx0.22\) (particles per mL).

Step2: Calculate the concentration of Solution B

For Solution B, assume \(n = 5\) (count the pink balls), \(V = 20\space mL\). So \(C_B=\frac{5}{20}=\frac{1}{4}= 0.25\) (particles per mL).

Answer:

Solution B