First, determine the amount of substance in moles by dividing the given amount in grams by the molar mass.
17.8 grams LiF x (1 mole / 25.94 grams LiF) = 0.686 moles LiF
Divide this amount of substance by the volume of the solution in liters.
molarity = 0.686 moles LiF / 0.915 L sol'n
The molarity is therefore, 0.75 M.
Answer:
B. Conductivity.
Explanation:
Conductivity is the quantity of heat passing per second through a slab of unit cross-sectional area when the temperature gradient between the two faces is unity when put in heat.
what do you need help with you did not add a pic or wrote the quetion
Answer:
26.6 g of CaCl₂ are required to make a 4M solution
Explanation:
4 M = Molarity of the solution
This is a type of concentratrion for solutions, that indicates the moles of solute in 1L of solution.
Solution's volume = 60 mL
We need to convert the volume from mL to L → 60 mL . 1L / 1000mL = 0.060L
Molarity = mol / volume (L) → Molarity . volume (L) = mol
4 M . 0.060L = 0.24 mol of solute
Let's convert the moles to mass → Molar mass CaCl₂
0.24 mol . 110.98 g / 1mol = 26.6 g