Ammonia has the chemical formula NH3, made out of nitrogen and hydrogen. Ammonia was first associated with the breakdown smell of decaying urine. Now it is made in chemical engineering plants. Ammonia is an example of a Bronsted-Lowry base, any compound that accept a proton, H+. Note that ammonia does not contain a OH- anion associated with a base solution. However, as shown in the equation in the picture, when ammonia is mixed with water as a Bronsted-Lowry base it accepts a proton, H+, from water leaving behind the OH- anion and thus creates extra OH- anions in solution with a pH of 11.