Can someone explain why we take the number of particles into account after we have determined our molality? I feel like I'm just memorizing this and not understanding why you need to determine # of particles for molality in the problem below. The observed boiling point was elevated by 1.02 degrees C. What was the molality of the NaCl in the sample? (The molal boiling point elevation constant of water is 0.51 degrees C/m. The answer is 1m I understand you divide 1.02 by 0.51 to get 2m, based on units, but then the answer says that we have 2 particles for NaCl making the molality 1m. Why do we need to break it up like this. Can someone please explain conceptually what is going on. I feel like I'm just memorizing this.