Answer:
4 mol/kg
Explanation :
potassium hydroxide = KOH
1.
get moles of solute =
mass of solute KOH ÷ molar mass of KOH
moles of potassium hydroxide =
112 g / 56 g/mol = 2 mol
2.
get Molality =
moles of solute ÷ Mass of solvent
Mass of solvent = 0.500 kg
Molality = 2 mol / 0.500 kg = 4 mol/kg
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