A Student Prepared a Stock Solution by Dissolving 20

Multiple Choice

A student prepared a stock solution by dissolving 20.0 g of KOH in enough water to make 150.mL of solution.She then took 15.0 mL of the stock solution and diluted it with enough water to make 65.0 mL of a final solution.What is the concentration of KOH for the final solution?

A) 0) 548 M
B) 0) 713 M
C) 1) 40 M
D) 1) 82 M