How many moles of #KNO_3# are contained in one liter of 0,2 #KNO_3# solution?

1 Answer
Nov 30, 2017

Answer:

I think there is a #0.2# molar quantity...

Explanation:

By definition, #"molarity"="moles of solute"/"volume of solution"#.

Here, we apparently have a #1*L# volume of #0.2*mol*L^-1# concentration....

And thus to get the molar quantity, we take the product.....

#"molarity"xx"volume of solution"=1*cancelLxx0.2*mol*cancel(L^-1)=0.2*mol#...

i.e. a mass of #0.2*molxx101.1*g*mol^-1=20.2*g# with respect to potassium nitrate...