1. 1..345 L = ________ ml what piece of equipment? 2.2.105 M = ______mM 3.68 uL = _______ mL what piece of equipment? 4.454 mg = _______ g what piece of equipment? 5.What is the definition of concentration? 6. Make 10 mL of 35% NaCl 7. What is the concentration (in g/mL) of 25 mL of 200mg of KCl? 8. Give the units for molarity.

2. 10. Make 10 mL of 200 mg/mL of NaOH 11. Find molecular weight of HCl 12. Make 2 L of.25M HCl 13. Make 5 mL of.5 M CuSO 4 x 5 H 2 0 14. Make 20 mL of 20% CuSO4 x 5 H20 15. Make 8 mL of 5 g/mL NaCl In problem 15, if the volume changed to 50 ml what would the new concentration in % be? What is the Molarity of #15? 16.Make 100 mL of 5x buffer from a 10x stock 17.Make a serial dilution of a 50x stock. Make 4 tubes of 30ml each. Draw how you would prepare this.