What is the meaning of a δh value of –400 kj in a reaction?

Draw metallic bonding if two copper

What changes occur in the reaction indicated by the equation? check all that apply. the hydrogen nucleus loses protons. the oxygen nucleus gains protons. the bond in h2 is broken, and new bonds are formed between hydrogen and oxygen atoms. each electron associated with a hydrogen atom is shared with an oxygen atom.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes