What do you call a pair of electrons not involved in bonding?

Why is the structure of molecule important to its function?

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?