Question

If you had 50.21 grams of NaCl and you dissolved it in exactly 2.00 kg of water. What would be the molality of the solution?

Answer 1

The answer to your question is molality = 0.43

Step-by-step 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