Here are the essential concepts you must grasp in order to answer the question correctly.
Mass/Volume Percent Concentration
Mass/volume percent (m/v) concentration is a way to express the concentration of a solution. It is defined as the mass of solute (in grams) per 100 mL of solution. For example, a 5.0% (m/v) glucose solution contains 5 grams of glucose in 100 mL of solution, which is crucial for calculating the required volume of a more concentrated solution.
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Dilution Equation
The dilution equation, often expressed as C1V1 = C2V2, relates the concentrations and volumes of two solutions before and after dilution. Here, C1 and V1 are the concentration and volume of the concentrated solution, while C2 and V2 are those of the diluted solution. This equation allows for the calculation of how much of the concentrated solution is needed to achieve a desired concentration.
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Volume Calculation
Volume calculation is essential in preparing solutions, as it determines how much of a concentrated solution is required to achieve a specific final volume and concentration. In this context, knowing the desired final volume (500 mL) and the target concentration (5.0% m/v) allows for the calculation of the volume of the 25% (m/v) solution needed to create the desired diluted solution.
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