A student prepare a stock solution by dissolving 15.0g of KOH in enough water to make 150.ml of solution. She then took 15.0 ml of the stock solution…

A student prepare a stock solution by dissolving 15.0g 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 enogh water to make 65.0ml of a final solution. what is the concentration of KOH for the final solution?