The ionic product for water is defined by. KW = [H3O+][OH-] For water at standard temperature and pressure, it is 1.00 x 10-14 mol2/dm6. pKW (which is equivalent to the pH) will be 7 at room temperature, because it is the -log10 of KW, and -log10 of the square root of 1x10-14 is 7.
Lightning has been the second largest storm killer in the U.S. for the last 40 years, exceeded only by floods. A lightning strike can result in a cardiac arrest (heart stopping) at the time of the injury, although some victims may appear to have a delayed death a few days later if they are resuscitated but have suffered irreversible brain damage.
The types and degrees of disability that follow a stroke will depend upon which area of the brain is damaged. Stroke damage in the brain can affect the entire body, resulting in mild to severe disabilities. Specific effects of a stroke can include: Weakness (hemiparesis) or paralysis (hemiplegia) on one side of the body that may affect the whole side or just the arm or leg. The weakness or paralysis is on the side of the body opposite the side of the brain that was affected by the stroke. Spasticity, stiffness in muscles, painful muscle spasms.