Question

the diagram below is a model of two solutions. each blue ball represents one particle of solute.solvent volume: 40 mlsolution asolvent volume: 25 mlsolution bwhich solution has a higher concentration of blue particles?solution a

Explanation:

Step1: Count solute particles (A)

Solution A has 12 solute particles.

Step2: Calculate conc. of A

Concentration = $\frac{\text{Number of particles}}{\text{Volume}}$
$\text{Concentration}_A = \frac{12}{40} = 0.3$ particles/mL

Step3: Count solute particles (B)

Solution B has 2 solute particles.

Step4: Calculate conc. of B

$\text{Concentration}_B = \frac{2}{25} = 0.08$ particles/mL

Step5: Compare concentrations

$0.3 > 0.08$, so Solution A is more concentrated.

Answer:

Solution A