Example: Calculate the pH of a buffer solution that initially consists of 0.0400 moles of ammonia and 0.0250 moles of ammonium ion, after 20.0 mL of 0.75 M NaOH has been added to the buffer. Ka for ammonium ion is 5.6 x 10 -10.
There are two types of bacteria. Aerobic bacteria live with oxygen, love the company of food particles in the mouth and feed on sugar. Anaerobic bacteria exist without oxygen and feed off dead skin cells and other bacteria.
Mouth Bacteria. Of all the types of microbes living in your mouth, bacteria are the most numerous. It has been estimated that there are over 100 million in every millilitre of saliva from more than 600 different species.Unless there are open wounds or cuts inside your mouth, most mouth bacteria will do you no harm.t has been estimated that there are over 100 million in every millilitre of saliva from more than 600 different species. Unless there are open wounds or cuts inside your mouth, most mouth bacteria will do you no harm.