Question

the diagram below is a model of two solutions. each pink ball represents one particle of solute. solvent volume: 30 ml solution a solvent volume: 25 ml solution b which solution has a higher concentration of pink particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Count solute particles

Solution A: 5 particles; Solution B: 5 particles.

Step2: Calculate concentration (particles/volume)

Concentration of A: $\frac{5}{30} = \frac{1}{6} \approx 0.167$ particles/mL.
Concentration of B: $\frac{5}{25} = \frac{1}{5} = 0.2$ particles/mL.

Step3: Compare concentrations

$0.2 > 0.167$, so Solution B has higher concentration.

Answer:

Solution B