# How many grams of sodium chloride are needed to prepare 250 mL of a 2% solution?

## Question:

How many grams of sodium chloride are needed to prepare 250 mL of a 2% solution?

## Percentage Concentration by Mass:

The concentration of a solution can be measured as a percentage of the ratio of the mass of the solute to the total volume of the solution. This is known as the percentage concentration by mass %(m/v) of the solution.

{eq}\% \ (m/v) =\displaystyle \frac{\text{Mass of the Solute}}{\text{Total volume of the Solution}} {/eq}

## Answer and Explanation: 1

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- The volume of the solution need to be prepared is {eq}V= 250 \ mL. {/eq}

- Concentration of the solution is {eq}C=2 \%. {/eq}

This means 2g...

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#### Learn more about this topic:

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Chapter 13 / Lesson 2Learn the dilute and concentrated solution definition. Compare and contrast dilute vs concentrated solution examples and see how a solution changes physically and chemically as it goes from dilute to concentrate.