Question

the diagram below is a model of two solutions. each green ball represents one particle of solute. solvent volume: 40 ml solvent volume: 45 ml solution a solution b which solution has a higher concentration of green particles? solution a solution b neither; their concentrations are the same

Explanation:

Step1: Count the number of solute particles

Solution A has 9 solute particles. Solution B has 9 solute particles.

Step2: Calculate the concentration formula

Concentration \(C=\frac{\text{Number of solute particles}}{\text{Volume of solvent}}\).
For Solution A: \(C_A=\frac{9}{40}\)
For Solution B: \(C_B=\frac{9}{45}\)

Step3: Compare the concentrations

We know that \(\frac{9}{40}= 0.225\) and \(\frac{9}{45}=0.2\). Since \(0.225>0.2\), \(C_A > C_B\)

Answer:

Solution A