methanol ch3oh can be produced by the following reaction. co(g) 2h2(g) ch3oh(g) the equilibrium concentrations at 250 C were found to be

Both models are effective because they show the valence electrons, and these valence electrons indicate the reactivity of an element.

Heat is involved in chemical change in two ways; chemical changes either result in heat being added to or removed from an object, and chemical changes require a certain amount of heat before they can take place.

The answer is accuracy