The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same thing as weight, but the abbreviation (w/v) is also common. How many grams of sucrose are needed to make 655 mL of a 36.0% (w/v) sucrose solution?

Answer 1

You can do this one of two way.
#1.
(g sucrose/g solution)*100 = 36.0% and solve for g sucrose.

#2. 36.0% means 36 g sucrose/100 g solution.
So how much will it take for 655 mL instead of 100. That will be
36.0g sucrose x (655/100) = ? g sucrose

Check out both and see if you get the same answer.