Question

What is the concentration of a `20.0573*g` mass of potassium hydroxide dissolved in an aqueous solution of `399*mL` volume?

Answer 1

`[KOH]~=0.9*mol*L^-1`

Explanation:

By definition....

`"Molarity"="Moles of solute (mol)"/"Volume of solution (L)"`

And so here we just fill in the details....

`((20.0537*g)/(56.1080*g*mol^-1))/(399*mLxx10^-3*L*mL^-1)=??*mol*L^-1`