Identify each chemical reaction as endothermic or exothermic based on its description.

Which substances have the lowest melting points: ionic covalent, or metallic

Which three statements represent the benefits of performing experiments using computer simulations?

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?