Chemistry Hw Help

Question

Calculate the molality of a solution containing 3.22mol of NaCl dissolved in 420g of water.

Answer 1

Molality (m) is defined as moles of solute per kg of solvent

moles of solute = 3.22

kg of solvent = 420 g x 1 kg/1000 g = 0.420 kg

Molality = 3.22 moles / 0.420 kg =7.7 m