Is the glass half empty or half full? Is the glass half empty or half full? "Is the glass half empty or half full?" is a common expression, a proverbial phrase, generally used rhetorically to indicate that a particular situation could be a cause for optimism (half full) or pessimism (half empty), or as a general litmus test to simply determine an individual's worldview. The purpose of the question is to demonstrate that the situation may be seen in different ways depending on one's point of view and that there may be opportunity in the situation as well as trouble. Another perspective comes from psychology, where research has
Alkalinity no strong acids or bases at this point. Therefore, the alkalinity is modeled and quantified with respect to the CO equivalence point. Because the alkalinity is measured with respect to the CO equivalence point, the dissolution of CO, although it adds acid and dissolved inorganic carbon, does not change the alkalinity. In natural conditions, the dissolution of basic rocks and addition of ammonia [NH] or organic amines leads to the addition of base to natural waters at the CO equivalence point. The dissolved base in water increases the pH and titrates an equivalent amount of CO to bicarbonate ion and