You need to make an aqueous solution of 0.171 M sodium fluoride for an experiment in lab, using a 250 mL volumetric flask. How much solid sodium fluoride should you add?

Which piece of equipment would me most useful for measuring the volume of some water? a. pan balance b. graduated cylinder c. tweezers d. flask quick

What happens to the atomic radius when an elctron is lost

8) a mixture of he, ne and ar has a pressure of 7.85 atm. if the ne has a mole fraction of 0.47 and 8) ar has a mole fraction of 0.23, what is the pressure of he? a) 4.2 atm b) 3.7 atm c) 5.5 atm d) 2.4 atm e) 1.8 atm