1 So applying the equilibrium rules, the formation of ammonia should be favoured by 2  ... (a) Using high pressure because you are going from 4 to 2 gas molecules, so high pressure favours the forward reaction to give fewer gas molecules.
However, any time your dog has vomited several times, or if he or she is experiencing diarrhea , lethargy, refusing to eat or has any other signs of illness, prompt veterinary care is necessary to diagnose and treat the underlying cause of the vomiting. Parasites are another common cause of vomiting in dogs. Puppies are especially at risk of developing parasites, though any age of dog can be infected with a variety of parasites. Some of the most common include:
Summary:  Hematemesis, which is commonly referred to as a dog vomiting blood is either caused by something temporary such as the ingestion of an object your dog ate after being outside, causes such as dietary intolerance, or something systemically wrong such as with the digestive tract (GI), liver or kidneys.f you have a dog vomiting blood take a sample of the vomit with you to the veterinarian for examination. Your vet will perform a thorough physical exam, do a blood test, and other tests as needed.