Question

the diagram below is a model of two solutions. each ball represents one particle of solute. which solution has a higher concentration of green particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Calculate concentration of green particles in 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, \(n = 2\), \(V=30\space mL\). So \(C_A=\frac{2}{30}=\frac{1}{15}\space particles/mL\)

Step2: Calculate concentration of green particles in Solution B

For Solution B, \(n = 9\), \(V = 45\space mL\). So \(C_B=\frac{9}{45}=\frac{1}{5}\space particles/mL\)

Step3: Compare the two concentrations

Since \(\frac{1}{5}>\frac{1}{15}\)

Answer:

Solution B