Answer:
The answer to your question is molality = 0.43
Explanation:
Data
mass of NaCl = 50.21 g
mass of water = 2 kg
Process
1.- Convert the mass of NaCl to moles
Molar mass of NaCl = 23 + 35.5 = 58.5 g
58.5 g of NaCl ----------------- 1 mol
50.21 g of NaCl ----------------- x
x = (50.21 x 1) / 58.5
x = 0.86 moles
2.- Calculate the molality
molality = moles / mass of solvent
-Substitution
molality = 0.86 / 2
-Result
molality = 0.43
