Question #6228f

1 Answer
Apr 9, 2017

Answer:

800 mL solution

Explanation:

% (m/v) is just a fancy way of saying you have so many grams of solute for every #100mL# of solution.

If the question states you have a #15%(m/v)# #NaOH#, that just means that there are #15 "grams"# of solute for every #100 "mL"# of solution (NaOH + water)

Now, you are asked what volume or how much volume will contain 120 grams of #NaOH#.

Well, since we have established a conversion factor for the amount of solute dissolved per #100 "mL"# of solution, we can figure out our unknown by using dimensional analysis.

#(120 cancel"g NaOH")/1*(100 "mL solution")/(15 cancel"g NaOH") = 800 "mL solution"#

#Answer: 800 "mL solution"#