Question

the diagram below is a model of two solutions. each blue ball represents one particle of solute. solvent volume: 35 ml solvent volume: 20 ml solution a solution b which solution has a higher concentration of blue 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, \(n = 7\), \(V=35\space mL\). So \(C_A=\frac{7}{35}=\frac{1}{5} = 0.2\) (particles per mL).

Step2: Calculate the concentration of Solution B

For Solution B, \(n = 4\), \(V = 20\space mL\). So \(C_B=\frac{4}{20}=\frac{1}{5}= 0.2\) (particles per mL).

Answer:

neither; their concentrations are the same