A balanced chemical equation contains a large amount of information. What information is given in a balanced equation?

This graph gives information on changes in sea ice extent in the arctic ocean over a 30-year span. the overall trend shows in the ice extent. to address the trend, scientists need to ask themselves, one direct consequence of the trend is that

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Can someone me with 1 to 4 plz. fast