# Question #46792

##### 1 Answer

You can go from

A mass by volume percent concentration solution is defined as grams of solute per 100 mL of solution, and multiplied by 100

If you assume a volume of *100 mL of solution*, which would make the calculations easier, you'd get

This means that each 100 mL of solution contains 5 grams of sodium hydroxide. Use sodium hydroxide's molar mass to see how many moles you'd get

This would make the solution's molarity be

**SIDE NOTE** *Don't forget that molarity is defined as moles of solute per liters of solution, that's why I converted 100 mL to L in the above equation.*