1 .. which means an equilibrium will form, so there is no chance of 100% yield even if you use, as you actually do, the theoretical reactant ratio of nitrogen: hydrogen of 1: 3 2  ! In forming ammonia 92kJ of heat energy is given out (i.e. exothermic, 46kJ of heat released per mole of ammonia formed).
Ingestion of rat poison may also be a cause of improper blood clotting. Hematemesis may also follow a traumatic incident, such as severe burns, heat stroke, major surgery, exposure to poisons from heavy metals, such as iron or lead, and snake bites. Exposure to toxic plants and pesticides may also cause vomiting of blood. Critically ill animals are at a higher risk for hematemesis.
A structure of the brain called the pons is where all vomiting is coordinated, and there's also a chemoreceptor zone in the brain designated specifically for chemical triggers that induce vomiting. When certain drugs or toxins cross the blood-brain barrier to stimulate this zone, it leads to the act of vomiting.