Question

the diagram below is a model of two solutions. each yellow ball represents one particle of solute.solvent volume: 30 mlsolution asolvent volume: 40 mlsolution bwhich solution has a higher concentration of yellow particles?solution asolution bneither; their concentrations are the same

Explanation:

Step1: Count solute particles for A

Solution A has 6 solute particles, volume = 30 mL.
Concentration of A: $\frac{6}{30} = 0.2$ particles/mL

Step2: Count solute particles for B

Solution B has 9 solute particles, volume = 40 mL.
Concentration of B: $\frac{9}{40} = 0.225$ particles/mL

Step3: Compare the two concentrations

$0.225 > 0.2$, so Solution B has higher concentration.

Answer:

Solution B