SEP Use Models Why does the number of electrons in each principal energy shell increase as the number of the shell increases?

What is the molality of a solution that has 4 mol of kci in 0.800 kg of water

What is the strongest intermolecular force between an nacl unit and an h2o molecule together in a solution? covalent bonding dipole-dipole force hydrogen bonding ion-dipole force

In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need