We’re being asked to determine what you would **add (solute or solvent) to obtain the following solution**

Recall that **molarity** is given by:

$\overline{){\mathbf{Molarity}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{moles}\mathbf{}\mathbf{of}\mathbf{}\mathbf{solute}}{\mathbf{Liters}\mathbf{}\mathbf{of}\mathbf{}\mathbf{solution}}}$

Our initial solution contains 8 molecules in a 1.0 L solution. Its concentration is 1 M.

This means 1 mole of solute has 8 molecules.

We will do the following steps to solve the problem:

Step 1: Determine the concentration of the final solution

Step 2: Determine the solute or solvent to be added

**For a, **

**Step 1**: Determine the concentration of the final solution

→

The circle below represents 1.0 liter of a solution with a solute
concentration of 1 M:

Explain what you would add (the amount of solute or volume of solvent) to the solution so as to obtain a solution represented by each of the figures (a) - (c)?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Dilution concept. If you need more Dilution practice, you can also practice Dilution practice problems.