# Determine the molarity of a 4.5 L solution that contains 100g of NaOH dissolved (Na=23 g/mol, O=16 g/mol, H=1 g/mol)?

##### 1 Answer

Jun 26, 2018

0.56 mol/L or 0.56 M

#### Explanation:

To find molarity, we'll use this formula:

We already have the volume, but we'll need to find the moles of solute (NaOH). From the given mass, we'll need to find the moles of NaOH using this:

Plugging in the moles to the molarity formula:

Either unit for molarity will be fine.