What is the molarity of 930 mL LiCl solution that contains 139.9 g LiCl?
1. Calculate the moles of LiCl:
* Molar mass of LiCl: 6.941 g/mol (Li) + 35.453 g/mol (Cl) =42.394 g/mol
* Moles of LiCl: (139.9 g LiCl) / (42.394 g/mol) =3.30 mol LiCl
2. Convert volume to liters:
* Volume in liters: 930 mL * (1 L / 1000 mL) =0.930 L
3. Calculate molarity:
* Molarity (M): (moles of solute) / (volume of solution in liters)
* Molarity: (3.30 mol LiCl) / (0.930 L) =3.55 M
Therefore, the molarity of the LiCl solution is 3.55 M.