Calculating Molality, Molarity, Mole Fraction and Mass Fraction

Stoichiometry: find mass, given moles

This video is an example of what I tutor for general chemistry.

Sizes of Atoms and Ions

This article is an example of what I tutor in general chemistry. The size of an atom depends on the amount of electron subshells and how close the electrons are to the nucleus. The atomic radius increases going down the periods and decreases going from left to right. Nonbonding atomic radius – half of the…