How Much Dissolved Substance Remains After Boiling?

[jackscholar]

Homework Statement

A solution 200mL solution has 1g/L of a solid dissolved in it. After boiling, there is only 136mL remaining. How much of the dissolved substance is left?

I figured that if
C1V1=C2V2, then if the concentrations were equal after calculation, i could the concentration after from the concentration before so that
C2=(C1V1)/V2 thus converting the concentration to grams afterwards and subtracted that value from the previous one.

 

[Borek]

IMHO you are misinterpreting the question. You are not asked about a new concentration, but whether amount of dissolve solid changed.

Did it? What was removed from the solution?