Answer to Question #165019 in General Chemistry for Fernando

Question

If 20.3 grams of an aqueous solution of barium sulfide, BaS, contains 2.59 grams of barium sulfide, what is the percentage by mass of barium sulfide in the solution?

______ % BaS

Answer 1

% by mass = $\frac{mass of a component }{total mass }$ ×100

% by mass = ( 2.59 / 20.3 ) × 100

% by mass = 12.75 %

12.75 % BaS