Answer:
Molality is 0.40 m
Explanation:
Molality is a sort of concentration that indicates the moles of solute dissolved in 1kg of solvent.
To determine molality we need the moles of solute, and the mass of solvent in kg so:
We convert the mass of solvent from g to kg:
740 g . 1kg/1000g = 0.740 kg
We know the moles, so we can determine molality
Molality (mol/kg) = 0.295 mol/ 0.740kg = 0.40 m
Answer:
Molality of the solution = 0.399 molal
Explanation:
Step 1: Data given
Number of moles KCl = 0.295 moles
Mass of water = 740.0 grams
Step 2: Convert mass to kg
740 grams = 740 *10^-3 kg = 0.740 kg
Step 3: Calculate the molality of the solution
Molality of the solution = moles KCl / mass water
Molality of the solution = 0.295 moles / 0.740 kg
Molality of the solution = 0.399 mol /kg = 0.399 molal
