The answer to the problem is 11.615
All elements in their standard states (oxygen<span> gas, solid carbon in the form of graphite, etc.) have a standard </span>enthalpy of formation<span> of </span>zero<span>, as there is no change involved in their </span>formation<span>.</span>
The answer cl atoms are in zn(cio3)2 is A:2 because I looked it up and it gave me 2.