Answer: 2. the product of ATP decomposition
Explanation:
The Adenosine triphospahte ATP is an energy currency made up,of 3 phospahte ions bonded to adenosine molecule
Each of these inorganic ions is bonded to Adenosine molecule by certain bond energy.Therefore the hydrolysis of these phosphate ions release equal amount of ENERGY of value
ATP HYDROLYSIS ADP + P(ions)
(30,5kj/mol) of energy for the first 2 inorganic phosphate hydrolysed, and 14.2kjmol for the last inorganic phosphate.