# Question 08fe4

Jul 7, 2015

The solution is 4% m/v.

#### Explanation:

To get the percent concentration of any solution, you essentially need to divide how much solute you have, in your case sodium hydroxide, by how much solution you have.

Since you know the mass of the solute and the volume of the solution, you can determine the mass by volume percent concentration of the solution by

$\text{%m/v" = m_"solute"/V_"solution} \cdot 100$

Plug in your values to get

"%m/v" = "20 g"/"500 mL" * 100 = color(green)("4%")#

Your sodium hydroxide solution is 4% m/v.