Three solutions 40mL of 0.2M KNO3; 66mL of 0.3 M Ca(NO3)2; and 39mL 0.185M KCl were poured together to make one new solution. what is the concentration of Cl- and NO3-

Answer 1

figure out how many moles of each ion. For instance, the K ion

moleK+=.185*.039+.2*.040 (sum of both solutions K).

Then, to find the total concentration of each ion(you only have to do two of them), concentrationion= moleion/totalvolume.