Answer:
No solution.
Explanation:
12.5% w/w means 12.5 grams of solute in 100 g of solution.
In 100 g of solution we have 12.5 g of solute
250 g of solution have ___ (250 . 12.5)/100 = 31.25 g
250 grams of solution of acetone in chloroform, has 31.25 grams of acetone.
One solution is not enough to the student who needs 65 g.
She would need, two more bottles of 250 grams of solution.