What is the ph of a solution with a concentration of 1.3 × 10-3 molar h3o+? show, or explain, the work used to solve this problem.

When an acid is added to water, the hydrogen ions released bind to the water molecules to form hydronium ions (H₃O⁺). Each hydrogen ion binds to one molecule of water, so the concentration of hydronium ions formed is equivalent to the hydrogen ions present. Therefore,
[H⁺] = 1.3 x 10⁻³

Next, 
pH = -log[H⁺]
pH = -log(1.3 x 10⁻³)
pH = 2.89

The pH of the solution will be 2.89

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?