**Molarity (M)** of a solution
is a ratio giving the number of moles of solute per liter of solution.

Molarity (M) = moles of solute (n) / liters of solution (V)

*This module is to calculate the
molarity of a solution by knowing the moles of the solute directly or
indirectly, and the volume of the solution, or calculate either the
moles of the solute or the volume of the solution by knowing the
molarity and the other quantity.*

**Question:***
What is the molarity of a solution prepared by dissolving 50.0 g of KNO _{3}
in enough water to gave 825 mL of solution?*

This is one step process, enter the known data and press **Calculate**
to output the unknowns.

1. Select** Molarity** link from
the front page or **Molarity**
tab from the **Solution**
module. The Input and Output screen appears.

2. In the **Input** area, enter
the three known quantities with a proper significant figure. Select
the units associated with the input.

3. Click **Calculate** to output
the answer.

4. The **Show Work** area on the
right shows you step-by-step how your problem has been solved.

To start a new problem, click **Reset.**
All Input fields will be cleared. Follow Step 1-3 again.