Answer:
In 8 drops (0.20 mL) of the solution there is 0.0060 g of starch.
Explanation:
A 3.0% (w/v) is a weight/volume percentage that means that there are 3.0 g of solute (starch) per 100 mL of solution. Then, in 0.20 mL of solution:
[tex]0.20mL(solution).\frac{3.0g(starch)}{100mL(solution)} = 0.0060g (starch)[/tex]