Question

the diagram below is a model of two solutions. each green 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: Count the number of solute particles

Solution A has 10 green balls (solute particles), Solution B has 10 green balls (solute particles).

Step2: Calculate the concentration formula

Concentration \(C=\frac{\text{Amount of solute}}{\text{Volume of solvent}}\). For Solution A, \(C_A=\frac{10}{40}=\frac{1}{4}\) (particles per mL). For Solution B, \(C_B = \frac{10}{50}=\frac{1}{5}\) (particles per mL).

Step3: Compare the concentrations

Since \(\frac{1}{4}>\frac{1}{5}\) (because when the numerators are the same, the fraction with the smaller denominator is larger).

Answer:

Solution A