# If 17.8 grams of #KOH# dissolve in enough water to make a 198-gram solution, what is the concentration in percent by mass?

##### 1 Answer

May 25, 2016

#### Answer:

The concentration of

#### Explanation:

The formula to use is

#color(blue)(|bar(ul(color(white)(a/a) "% by mass" = "mass of component"/"total mass of sample" × 100 %color(white)(a/a)|)))" "#

For your solution,