# A 2.19*g mass of potassium nitrate is dissolved in a 75*g mass of water. What is it percentage concentration?

Aug 10, 2017

#### Answer:

"% by mass"="mass of solute"/"mass of solute + solvent"xx100%~=3%

#### Explanation:

"% by mass"=(2.19*g)/(2.19*g+75*g)xx100%=?%

The volume of this solution would not be much different to the volume of the starting solution. And the likely solvent is water.....