Salt- #22, #40, #49

Salt- #22

Salt, NaCl, has ionic bonds. Its ionization equation is Na+ + Cl- = NaCl

Source:

dl.clackamas.cc.or.us/ch105-03/writing.htm

Salt- #40

To have 0.10 moles of NaCl you would need 5.84g.

0.10 moles NaCl X 58.43g/ 1 mole NaCl

Source:

my brain

Salt- #49



To figure out how much salt you'd need to make 250mL a 0.2M solution, you have to use the Molarity equation. The equation is moles of solute (salt)/ Liters solution = Molarity. To start you need the amount of liquid in L. To convert that I divided 250 by 1000. Then I multiplied .250L by 0.2M and got 0.05 moles. Then to convert moles to grams I used 0.05 moles NaCl X 58.43g NaCl/ 1 mole NaCl. You need 2.92gNaCl.

Source:

my brain