PART I:
You need 1045 mL of a 70% alcohol solution. On hand, you have a 5% alcohol mixture. How much of the 5% alcohol mixture and pure alcohol will you need to obtain the desired solution?

PART II:
You need a 85% alcohol solution. On hand, you have a 595 mL of a 95% alcohol mixture. How much pure water will you need to add to obtain the desired solution?