Question

the diagram below is a model of two solutions. each pink 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 pink particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Calculate concentration formula

Concentration \(C=\frac{\text{Number of solute particles}}{\text{Volume of solvent}}\)

Step2: Calculate concentration for Solution A

Number of solute particles in Solution A \(n_A = 9\), Volume of solvent \(V_A=35\space mL\). So \(C_A=\frac{9}{35}\approx0.257\) particles per mL

Step3: Calculate concentration for Solution B

Number of solute particles in Solution B \(n_B = 2\), Volume of solvent \(V_B = 20\space mL\). So \(C_B=\frac{2}{20}= 0.1\) particles per mL

Answer:

Solution A