Which of the following is the correct definition of chemical energy? A. energy stored in chemical bonds of molecules
B.
energy an object has because of its motion or position
C.
energy of an object due to the random motion of its atoms and molecules
D.
energy produced from the splitting of atoms

Hydrogenation reactions, in which h2 and an "unsaturated" organic compound combine, are used in the food, fuel, and polymer industries. in the simplest case, ethene (c2h4) and h2 form ethane (c2h6). if 140 kj is given off per mole of c2h4 reacting, how much heat (in mj) is released when 12 kg of c2h6 forms?